feat(map): 해저케이블 레이어 및 정보 패널 구현

- subcable entity 생성 (타입 정의 + 데이터 로딩 hook)
- MapLibre 레이어: 케이블 라인 + 호버 하이라이트 + 라벨
- 지도 표시 설정에 해저케이블 토글 추가
- 클릭 시 우측 정보 패널 (길이, 개통, 운영사, landing points)
- Map3D + DashboardPage 통합

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/web/public/map/styles/carto-dark.json

@@ -1,6 +1,7 @@
 {
   "version": 8,
   "name": "CARTO Dark (Legacy)",
+  "glyphs": "https://demotiles.maplibre.org/font/{fontstack}/{range}.pbf",
   "sources": {
     "carto-dark": {
       "type": "raster",

apps/web/public/map/styles/osm-seamark.json

@@ -1,6 +1,7 @@
 {
   "version": 8,
   "name": "OSM Raster + OpenSeaMap",
+  "glyphs": "https://demotiles.maplibre.org/font/{fontstack}/{range}.pbf",
   "sources": {
     "osm": {
       "type": "raster",

apps/web/src/entities/subcable/api/useSubcables.ts

@@ -0,0 +1,52 @@
+import { useEffect, useState } from 'react';
+import type { SubcableGeoJson, SubcableDetailsIndex, SubcableDetail } from '../model/types';
+
+interface SubcableData {
+  geo: SubcableGeoJson;
+  details: Map<string, SubcableDetail>;
+}
+
+export function useSubcables(
+  geoUrl = '/data/subcables/cable-geo.json',
+  detailsUrl = '/data/subcables/cable-details.min.json',
+) {
+  const [data, setData] = useState<SubcableData | null>(null);
+  const [error, setError] = useState<string | null>(null);
+
+  useEffect(() => {
+    let cancelled = false;
+
+    async function run() {
+      try {
+        setError(null);
+        const [geoRes, detailsRes] = await Promise.all([
+          fetch(geoUrl),
+          fetch(detailsUrl),
+        ]);
+        if (!geoRes.ok) throw new Error(`Failed to load subcable geo: ${geoRes.status}`);
+        if (!detailsRes.ok) throw new Error(`Failed to load subcable details: ${detailsRes.status}`);
+
+        const geo = (await geoRes.json()) as SubcableGeoJson;
+        const detailsJson = (await detailsRes.json()) as SubcableDetailsIndex;
+        if (cancelled) return;
+
+        const details = new Map<string, SubcableDetail>();
+        for (const [id, detail] of Object.entries(detailsJson.by_id)) {
+          details.set(id, detail);
+        }
+
+        setData({ geo, details });
+      } catch (e) {
+        if (cancelled) return;
+        setError(e instanceof Error ? e.message : String(e));
+      }
+    }
+
+    void run();
+    return () => {
+      cancelled = true;
+    };
+  }, [geoUrl, detailsUrl]);
+
+  return { data, error };
+}

apps/web/src/entities/subcable/model/types.ts

@@ -0,0 +1,39 @@
+export interface SubcableFeatureProperties {
+  id: string;
+  name: string;
+  color: string;
+  feature_id: string;
+  coordinates: [number, number];
+}
+
+export type SubcableGeoJson = GeoJSON.FeatureCollection<
+  GeoJSON.MultiLineString,
+  SubcableFeatureProperties
+>;
+
+export interface SubcableLandingPoint {
+  id: string;
+  name: string;
+  country: string;
+  is_tbd: boolean;
+}
+
+export interface SubcableDetail {
+  id: string;
+  name: string;
+  length: string | null;
+  rfs: string | null;
+  rfs_year: number | null;
+  is_planned: boolean;
+  owners: string | null;
+  suppliers: string | null;
+  landing_points: SubcableLandingPoint[];
+  notes: string | null;
+  url: string | null;
+}
+
+export interface SubcableDetailsIndex {
+  version: number;
+  generated_at: string;
+  by_id: Record<string, SubcableDetail>;
+}

apps/web/src/features/mapToggles/MapToggles.tsx

@@ -6,6 +6,7 @@ export type MapToggleState = {
   fleetCircles: boolean;
   predictVectors: boolean;
   shipLabels: boolean;
+  subcables: boolean;
 };
 
 type Props = {
@@ -22,6 +23,7 @@ export function MapToggles({ value, onToggle }: Props) {
     { id: "zones", label: "수역 표시" },
     { id: "predictVectors", label: "예측 벡터" },
     { id: "shipLabels", label: "선박명 표시" },
+    { id: "subcables", label: "해저케이블" },
   ];
 
   return (

apps/web/src/pages/dashboard/DashboardPage.tsx

@@ -11,6 +11,7 @@ import { buildLegacyVesselIndex } from "../../entities/legacyVessel/lib";
 import type { LegacyVesselIndex } from "../../entities/legacyVessel/lib";
 import type { LegacyVesselDataset } from "../../entities/legacyVessel/model/types";
 import { useZones } from "../../entities/zone/api/useZones";
+import { useSubcables } from "../../entities/subcable/api/useSubcables";
 import type { VesselTypeCode } from "../../entities/vessel/model/types";
 import { AisInfoPanel } from "../../widgets/aisInfo/AisInfoPanel";
 import { AisTargetList } from "../../widgets/aisTargetList/AisTargetList";
@@ -21,6 +22,7 @@ import { RelationsPanel } from "../../widgets/relations/RelationsPanel";
 import { SpeedProfilePanel } from "../../widgets/speed/SpeedProfilePanel";
 import { Topbar } from "../../widgets/topbar/Topbar";
 import { VesselInfoPanel } from "../../widgets/info/VesselInfoPanel";
+import { SubcableInfoPanel } from "../../widgets/subcableInfo/SubcableInfoPanel";
 import { VesselList } from "../../widgets/vesselList/VesselList";
 import {
   buildLegacyHitMap,
@@ -70,6 +72,7 @@ function useLegacyIndex(data: LegacyVesselDataset | null): LegacyVesselIndex | n
 export function DashboardPage() {
   const { data: zones, error: zonesError } = useZones();
   const { data: legacyData, error: legacyError } = useLegacyVessels();
+  const { data: subcableData } = useSubcables();
   const legacyIndex = useLegacyIndex(legacyData);
 
   const [viewBbox, setViewBbox] = useState<Bbox | null>(null);
@@ -115,8 +118,9 @@ export function DashboardPage() {
     fcLines: true,
     zones: true,
     fleetCircles: true,
-    predictVectors: false,
-    shipLabels: false,
+    predictVectors: true,
+    shipLabels: true,
+    subcables: false,
   });
   const [fleetRelationSortMode, setFleetRelationSortMode] = useState<FleetRelationSortMode>("count");
 
@@ -126,6 +130,9 @@ export function DashboardPage() {
 
   const [fleetFocus, setFleetFocus] = useState<{ id: string | number; center: [number, number]; zoom?: number } | undefined>(undefined);
 
+  const [hoveredCableId, setHoveredCableId] = useState<string | null>(null);
+  const [selectedCableId, setSelectedCableId] = useState<string | null>(null);
+
   const [settings, setSettings] = useState<Map3DSettings>({
     showShips: true,
     showDensity: false,
@@ -711,6 +718,10 @@ export function DashboardPage() {
             setHoveredFleetOwnerKey(null);
             setHoveredFleetMmsiSet((prev) => (prev.length === 0 ? prev : []));
           }}
+          subcableGeo={subcableData?.geo ?? null}
+          hoveredCableId={hoveredCableId}
+          onHoverCable={setHoveredCableId}
+          onClickCable={(id) => setSelectedCableId((prev) => (prev === id ? null : id))}
         />
         <MapLegend />
         {selectedLegacyVessel ? (
@@ -718,6 +729,13 @@ export function DashboardPage() {
         ) : selectedTarget ? (
           <AisInfoPanel target={selectedTarget} legacy={selectedLegacyInfo} onClose={() => setSelectedMmsi(null)} />
         ) : null}
+        {selectedCableId && subcableData?.details.get(selectedCableId) ? (
+          <SubcableInfoPanel
+            detail={subcableData.details.get(selectedCableId)!}
+            color={subcableData.geo.features.find((f) => f.properties.id === selectedCableId)?.properties.color}
+            onClose={() => setSelectedCableId(null)}
+          />
+        ) : null}
       </div>
     </div>
   );

apps/web/src/widgets/map3d/constants.ts

@@ -0,0 +1,166 @@
+import {
+  LEGACY_CODE_COLORS_RGB,
+  OVERLAY_RGB,
+  rgba as rgbaCss,
+} from '../../shared/lib/map/palette';
+import type { BathyZoomRange } from './types';
+
+// ── Re-export palette aliases used throughout Map3D ──
+
+export const LEGACY_CODE_COLORS = LEGACY_CODE_COLORS_RGB;
+
+const OVERLAY_PAIR_NORMAL_RGB = OVERLAY_RGB.pairNormal;
+const OVERLAY_PAIR_WARN_RGB = OVERLAY_RGB.pairWarn;
+const OVERLAY_FC_TRANSFER_RGB = OVERLAY_RGB.fcTransfer;
+const OVERLAY_FLEET_RANGE_RGB = OVERLAY_RGB.fleetRange;
+const OVERLAY_SUSPICIOUS_RGB = OVERLAY_RGB.suspicious;
+
+// ── Ship icon mapping (Deck.gl IconLayer) ──
+
+export const SHIP_ICON_MAPPING = {
+  ship: {
+    x: 0,
+    y: 0,
+    width: 128,
+    height: 128,
+    anchorX: 64,
+    anchorY: 64,
+    mask: true,
+  },
+} as const;
+
+// ── Ship constants ──
+
+export const ANCHOR_SPEED_THRESHOLD_KN = 1;
+export const ANCHORED_SHIP_ICON_ID = 'ship-globe-anchored-icon';
+
+// ── Geometry constants ──
+
+export const DEG2RAD = Math.PI / 180;
+export const RAD2DEG = 180 / Math.PI;
+export const EARTH_RADIUS_M = 6371008.8; // MapLibre's `earthRadius`
+export const GLOBE_ICON_HEADING_OFFSET_DEG = 0;
+
+// ── Ship color constants ──
+
+export const MAP_SELECTED_SHIP_RGB: [number, number, number] = [34, 211, 238];
+export const MAP_HIGHLIGHT_SHIP_RGB: [number, number, number] = [245, 158, 11];
+export const MAP_DEFAULT_SHIP_RGB: [number, number, number] = [100, 116, 139];
+
+// ── Ship outline / halo contrast colors ──
+
+export const HALO_OUTLINE_COLOR: [number, number, number, number] = [210, 225, 240, 155];
+export const HALO_OUTLINE_COLOR_SELECTED: [number, number, number, number] = [14, 234, 255, 230];
+export const HALO_OUTLINE_COLOR_HIGHLIGHTED: [number, number, number, number] = [245, 158, 11, 210];
+export const GLOBE_OUTLINE_PERMITTED = 'rgba(210,225,240,0.62)';
+export const GLOBE_OUTLINE_OTHER = 'rgba(160,175,195,0.35)';
+
+// ── Flat map icon sizes ──
+
+export const FLAT_SHIP_ICON_SIZE = 19;
+export const FLAT_SHIP_ICON_SIZE_SELECTED = 28;
+export const FLAT_SHIP_ICON_SIZE_HIGHLIGHTED = 25;
+export const FLAT_LEGACY_HALO_RADIUS = 14;
+export const FLAT_LEGACY_HALO_RADIUS_SELECTED = 18;
+export const FLAT_LEGACY_HALO_RADIUS_HIGHLIGHTED = 16;
+export const EMPTY_MMSI_SET = new Set<number>();
+
+// ── Deck.gl view ID ──
+
+export const DECK_VIEW_ID = 'mapbox';
+
+// ── Depth params ──
+
+export const DEPTH_DISABLED_PARAMS = {
+  depthCompare: 'always',
+  depthWriteEnabled: false,
+} as const;
+
+export const GLOBE_OVERLAY_PARAMS = {
+  depthCompare: 'less-equal',
+  depthWriteEnabled: false,
+} as const;
+
+// ── Deck.gl color constants (avoid per-object allocations inside accessors) ──
+
+export const PAIR_RANGE_NORMAL_DECK: [number, number, number, number] = [
+  OVERLAY_PAIR_NORMAL_RGB[0], OVERLAY_PAIR_NORMAL_RGB[1], OVERLAY_PAIR_NORMAL_RGB[2], 110,
+];
+export const PAIR_RANGE_WARN_DECK: [number, number, number, number] = [
+  OVERLAY_PAIR_WARN_RGB[0], OVERLAY_PAIR_WARN_RGB[1], OVERLAY_PAIR_WARN_RGB[2], 170,
+];
+export const PAIR_LINE_NORMAL_DECK: [number, number, number, number] = [
+  OVERLAY_PAIR_NORMAL_RGB[0], OVERLAY_PAIR_NORMAL_RGB[1], OVERLAY_PAIR_NORMAL_RGB[2], 85,
+];
+export const PAIR_LINE_WARN_DECK: [number, number, number, number] = [
+  OVERLAY_PAIR_WARN_RGB[0], OVERLAY_PAIR_WARN_RGB[1], OVERLAY_PAIR_WARN_RGB[2], 220,
+];
+export const FC_LINE_NORMAL_DECK: [number, number, number, number] = [
+  OVERLAY_FC_TRANSFER_RGB[0], OVERLAY_FC_TRANSFER_RGB[1], OVERLAY_FC_TRANSFER_RGB[2], 200,
+];
+export const FC_LINE_SUSPICIOUS_DECK: [number, number, number, number] = [
+  OVERLAY_SUSPICIOUS_RGB[0], OVERLAY_SUSPICIOUS_RGB[1], OVERLAY_SUSPICIOUS_RGB[2], 220,
+];
+export const FLEET_RANGE_LINE_DECK: [number, number, number, number] = [
+  OVERLAY_FLEET_RANGE_RGB[0], OVERLAY_FLEET_RANGE_RGB[1], OVERLAY_FLEET_RANGE_RGB[2], 140,
+];
+export const FLEET_RANGE_FILL_DECK: [number, number, number, number] = [
+  OVERLAY_FLEET_RANGE_RGB[0], OVERLAY_FLEET_RANGE_RGB[1], OVERLAY_FLEET_RANGE_RGB[2], 6,
+];
+
+// ── Highlighted variants ──
+
+export const PAIR_RANGE_NORMAL_DECK_HL: [number, number, number, number] = [
+  OVERLAY_PAIR_NORMAL_RGB[0], OVERLAY_PAIR_NORMAL_RGB[1], OVERLAY_PAIR_NORMAL_RGB[2], 200,
+];
+export const PAIR_RANGE_WARN_DECK_HL: [number, number, number, number] = [
+  OVERLAY_PAIR_WARN_RGB[0], OVERLAY_PAIR_WARN_RGB[1], OVERLAY_PAIR_WARN_RGB[2], 240,
+];
+export const PAIR_LINE_NORMAL_DECK_HL: [number, number, number, number] = [
+  OVERLAY_PAIR_NORMAL_RGB[0], OVERLAY_PAIR_NORMAL_RGB[1], OVERLAY_PAIR_NORMAL_RGB[2], 245,
+];
+export const PAIR_LINE_WARN_DECK_HL: [number, number, number, number] = [
+  OVERLAY_PAIR_WARN_RGB[0], OVERLAY_PAIR_WARN_RGB[1], OVERLAY_PAIR_WARN_RGB[2], 245,
+];
+export const FC_LINE_NORMAL_DECK_HL: [number, number, number, number] = [
+  OVERLAY_FC_TRANSFER_RGB[0], OVERLAY_FC_TRANSFER_RGB[1], OVERLAY_FC_TRANSFER_RGB[2], 235,
+];
+export const FC_LINE_SUSPICIOUS_DECK_HL: [number, number, number, number] = [
+  OVERLAY_SUSPICIOUS_RGB[0], OVERLAY_SUSPICIOUS_RGB[1], OVERLAY_SUSPICIOUS_RGB[2], 245,
+];
+export const FLEET_RANGE_LINE_DECK_HL: [number, number, number, number] = [
+  OVERLAY_FLEET_RANGE_RGB[0], OVERLAY_FLEET_RANGE_RGB[1], OVERLAY_FLEET_RANGE_RGB[2], 220,
+];
+export const FLEET_RANGE_FILL_DECK_HL: [number, number, number, number] = [
+  OVERLAY_FLEET_RANGE_RGB[0], OVERLAY_FLEET_RANGE_RGB[1], OVERLAY_FLEET_RANGE_RGB[2], 42,
+];
+
+// ── MapLibre overlay colors ──
+
+export const PAIR_LINE_NORMAL_ML = rgbaCss(OVERLAY_PAIR_NORMAL_RGB, 0.55);
+export const PAIR_LINE_WARN_ML = rgbaCss(OVERLAY_PAIR_WARN_RGB, 0.95);
+export const PAIR_LINE_NORMAL_ML_HL = rgbaCss(OVERLAY_PAIR_NORMAL_RGB, 0.95);
+export const PAIR_LINE_WARN_ML_HL = rgbaCss(OVERLAY_PAIR_WARN_RGB, 0.98);
+
+export const PAIR_RANGE_NORMAL_ML = rgbaCss(OVERLAY_PAIR_NORMAL_RGB, 0.45);
+export const PAIR_RANGE_WARN_ML = rgbaCss(OVERLAY_PAIR_WARN_RGB, 0.75);
+export const PAIR_RANGE_NORMAL_ML_HL = rgbaCss(OVERLAY_PAIR_NORMAL_RGB, 0.92);
+export const PAIR_RANGE_WARN_ML_HL = rgbaCss(OVERLAY_PAIR_WARN_RGB, 0.92);
+
+export const FC_LINE_NORMAL_ML = rgbaCss(OVERLAY_FC_TRANSFER_RGB, 0.92);
+export const FC_LINE_SUSPICIOUS_ML = rgbaCss(OVERLAY_SUSPICIOUS_RGB, 0.95);
+export const FC_LINE_NORMAL_ML_HL = rgbaCss(OVERLAY_FC_TRANSFER_RGB, 0.98);
+export const FC_LINE_SUSPICIOUS_ML_HL = rgbaCss(OVERLAY_SUSPICIOUS_RGB, 0.98);
+
+export const FLEET_FILL_ML = rgbaCss(OVERLAY_FLEET_RANGE_RGB, 0.02);
+export const FLEET_FILL_ML_HL = rgbaCss(OVERLAY_FLEET_RANGE_RGB, 0.16);
+export const FLEET_LINE_ML = rgbaCss(OVERLAY_FLEET_RANGE_RGB, 0.65);
+export const FLEET_LINE_ML_HL = rgbaCss(OVERLAY_FLEET_RANGE_RGB, 0.95);
+
+// ── Bathymetry zoom ranges ──
+
+export const BATHY_ZOOM_RANGES: BathyZoomRange[] = [
+  { id: 'bathymetry-fill', mercator: [5, 24], globe: [7, 24] },
+  { id: 'bathymetry-borders', mercator: [5, 24], globe: [7, 24] },
+  { id: 'bathymetry-borders-major', mercator: [3, 24], globe: [7, 24] },
+];

apps/web/src/widgets/map3d/hooks/useBaseMapToggle.ts

@@ -0,0 +1,132 @@
+import { useEffect, useRef, type MutableRefObject } from 'react';
+import type maplibregl from 'maplibre-gl';
+import type { BaseMapId, MapProjectionId } from '../types';
+import { kickRepaint, onMapStyleReady, getLayerId } from '../lib/mapCore';
+import { ensureSeamarkOverlay } from '../layers/seamark';
+import { applyBathymetryZoomProfile, resolveMapStyle } from '../layers/bathymetry';
+
+export function useBaseMapToggle(
+  mapRef: MutableRefObject<maplibregl.Map | null>,
+  opts: {
+    baseMap: BaseMapId;
+    projection: MapProjectionId;
+    showSeamark: boolean;
+    mapSyncEpoch: number;
+    pulseMapSync: () => void;
+  },
+) {
+  const { baseMap, projection, showSeamark, mapSyncEpoch, pulseMapSync } = opts;
+
+  const showSeamarkRef = useRef(showSeamark);
+  const bathyZoomProfileKeyRef = useRef<string>('');
+
+  useEffect(() => {
+    showSeamarkRef.current = showSeamark;
+  }, [showSeamark]);
+
+  // Base map style toggle
+  useEffect(() => {
+    const map = mapRef.current;
+    if (!map) return;
+
+    let cancelled = false;
+    const controller = new AbortController();
+    let stop: (() => void) | null = null;
+
+    (async () => {
+      try {
+        const style = await resolveMapStyle(baseMap, controller.signal);
+        if (cancelled) return;
+        map.setStyle(style, { diff: false });
+        stop = onMapStyleReady(map, () => {
+          kickRepaint(map);
+          requestAnimationFrame(() => kickRepaint(map));
+          pulseMapSync();
+        });
+      } catch (e) {
+        if (cancelled) return;
+        console.warn('Base map switch failed:', e);
+      }
+    })();
+
+    return () => {
+      cancelled = true;
+      controller.abort();
+      stop?.();
+    };
+  }, [baseMap]);
+
+  // Bathymetry zoom profile + water layer visibility
+  useEffect(() => {
+    const map = mapRef.current;
+    if (!map) return;
+
+    const apply = () => {
+      if (!map.isStyleLoaded()) return;
+      const seaVisibility = 'visible' as const;
+      const seaRegex = /(water|sea|ocean|river|lake|coast|bay)/i;
+
+      const nextProfileKey = `bathyZoomV1|${baseMap}|${projection}`;
+      if (bathyZoomProfileKeyRef.current !== nextProfileKey) {
+        applyBathymetryZoomProfile(map, baseMap, projection);
+        bathyZoomProfileKeyRef.current = nextProfileKey;
+        kickRepaint(map);
+      }
+
+      try {
+        const style = map.getStyle();
+        const styleLayers = style && Array.isArray(style.layers) ? style.layers : [];
+        for (const layer of styleLayers) {
+          const id = getLayerId(layer);
+          if (!id) continue;
+          const sourceLayer = String((layer as Record<string, unknown>)['source-layer'] ?? '').toLowerCase();
+          const source = String((layer as { source?: unknown }).source ?? '').toLowerCase();
+          const type = String((layer as { type?: unknown }).type ?? '').toLowerCase();
+          const isSea = seaRegex.test(id) || seaRegex.test(sourceLayer) || seaRegex.test(source);
+          const isRaster = type === 'raster';
+          if (!isSea) continue;
+          if (!map.getLayer(id)) continue;
+          if (isRaster && id === 'seamark') continue;
+          try {
+            map.setLayoutProperty(id, 'visibility', seaVisibility);
+          } catch {
+            // ignore
+          }
+        }
+      } catch {
+        // ignore
+      }
+    };
+
+    const stop = onMapStyleReady(map, apply);
+    return () => {
+      stop();
+    };
+  }, [projection, baseMap, mapSyncEpoch]);
+
+  // Seamark toggle
+  useEffect(() => {
+    const map = mapRef.current;
+    if (!map) return;
+    if (showSeamark) {
+      try {
+        ensureSeamarkOverlay(map, 'bathymetry-lines');
+        map.setPaintProperty('seamark', 'raster-opacity', 0.85);
+      } catch {
+        // ignore until style is ready
+      }
+      return;
+    }
+
+    try {
+      if (map.getLayer('seamark')) map.removeLayer('seamark');
+    } catch {
+      // ignore
+    }
+    try {
+      if (map.getSource('seamark')) map.removeSource('seamark');
+    } catch {
+      // ignore
+    }
+  }, [showSeamark]);
+}

apps/web/src/widgets/map3d/hooks/useDeckLayers.ts

@@ -0,0 +1,662 @@
+import { useEffect, useMemo, type MutableRefObject } from 'react';
+import { HexagonLayer } from '@deck.gl/aggregation-layers';
+import { IconLayer, LineLayer, ScatterplotLayer } from '@deck.gl/layers';
+import { MapboxOverlay } from '@deck.gl/mapbox';
+import { type PickingInfo } from '@deck.gl/core';
+import type { AisTarget } from '../../../entities/aisTarget/model/types';
+import type { LegacyVesselInfo } from '../../../entities/legacyVessel/model/types';
+import type { FcLink, FleetCircle, PairLink } from '../../../features/legacyDashboard/model/types';
+import type { MapToggleState } from '../../../features/mapToggles/MapToggles';
+import type { DashSeg, Map3DSettings, MapProjectionId, PairRangeCircle } from '../types';
+import { MaplibreDeckCustomLayer } from '../MaplibreDeckCustomLayer';
+import {
+  SHIP_ICON_MAPPING,
+  FLAT_SHIP_ICON_SIZE,
+  FLAT_SHIP_ICON_SIZE_SELECTED,
+  FLAT_SHIP_ICON_SIZE_HIGHLIGHTED,
+  FLAT_LEGACY_HALO_RADIUS,
+  FLAT_LEGACY_HALO_RADIUS_SELECTED,
+  FLAT_LEGACY_HALO_RADIUS_HIGHLIGHTED,
+  EMPTY_MMSI_SET,
+  DEPTH_DISABLED_PARAMS,
+  GLOBE_OVERLAY_PARAMS,
+  HALO_OUTLINE_COLOR,
+  HALO_OUTLINE_COLOR_SELECTED,
+  HALO_OUTLINE_COLOR_HIGHLIGHTED,
+  PAIR_RANGE_NORMAL_DECK,
+  PAIR_RANGE_WARN_DECK,
+  PAIR_LINE_NORMAL_DECK,
+  PAIR_LINE_WARN_DECK,
+  FC_LINE_NORMAL_DECK,
+  FC_LINE_SUSPICIOUS_DECK,
+  FLEET_RANGE_LINE_DECK,
+  FLEET_RANGE_FILL_DECK,
+  PAIR_RANGE_NORMAL_DECK_HL,
+  PAIR_RANGE_WARN_DECK_HL,
+  PAIR_LINE_NORMAL_DECK_HL,
+  PAIR_LINE_WARN_DECK_HL,
+  FC_LINE_NORMAL_DECK_HL,
+  FC_LINE_SUSPICIOUS_DECK_HL,
+  FLEET_RANGE_LINE_DECK_HL,
+  FLEET_RANGE_FILL_DECK_HL,
+} from '../constants';
+import { toSafeNumber } from '../lib/setUtils';
+import { getDisplayHeading, getShipColor } from '../lib/shipUtils';
+import {
+  getShipTooltipHtml,
+  getPairLinkTooltipHtml,
+  getFcLinkTooltipHtml,
+  getRangeTooltipHtml,
+  getFleetCircleTooltipHtml,
+} from '../lib/tooltips';
+import { sanitizeDeckLayerList } from '../lib/mapCore';
+
+export function useDeckLayers(
+  mapRef: MutableRefObject<import('maplibre-gl').Map | null>,
+  overlayRef: MutableRefObject<MapboxOverlay | null>,
+  globeDeckLayerRef: MutableRefObject<MaplibreDeckCustomLayer | null>,
+  projectionBusyRef: MutableRefObject<boolean>,
+  opts: {
+    projection: MapProjectionId;
+    settings: Map3DSettings;
+    shipLayerData: AisTarget[];
+    shipOverlayLayerData: AisTarget[];
+    shipData: AisTarget[];
+    legacyHits: Map<number, LegacyVesselInfo> | null | undefined;
+    pairLinks: PairLink[] | undefined;
+    fcLinks: FcLink[] | undefined;
+    fcDashed: DashSeg[];
+    fleetCircles: FleetCircle[] | undefined;
+    pairRanges: PairRangeCircle[];
+    pairLinksInteractive: PairLink[];
+    pairRangesInteractive: PairRangeCircle[];
+    fcLinesInteractive: DashSeg[];
+    fleetCirclesInteractive: FleetCircle[];
+    overlays: MapToggleState;
+    shipByMmsi: Map<number, AisTarget>;
+    selectedMmsi: number | null;
+    shipHighlightSet: Set<number>;
+    isHighlightedFleet: (ownerKey: string, vesselMmsis: number[]) => boolean;
+    isHighlightedPair: (aMmsi: number, bMmsi: number) => boolean;
+    isHighlightedMmsi: (mmsi: number) => boolean;
+    clearDeckHoverPairs: () => void;
+    clearDeckHoverMmsi: () => void;
+    clearMapFleetHoverState: () => void;
+    setDeckHoverPairs: (next: number[]) => void;
+    setDeckHoverMmsi: (next: number[]) => void;
+    setMapFleetHoverState: (ownerKey: string | null, vesselMmsis: number[]) => void;
+    toFleetMmsiList: (value: unknown) => number[];
+    touchDeckHoverState: (isHover: boolean) => void;
+    hasAuxiliarySelectModifier: (ev?: { shiftKey?: boolean; ctrlKey?: boolean; metaKey?: boolean } | null) => boolean;
+    onDeckSelectOrHighlight: (info: unknown, allowMultiSelect?: boolean) => void;
+    onSelectMmsi: (mmsi: number | null) => void;
+    onToggleHighlightMmsi?: (mmsi: number) => void;
+    ensureMercatorOverlay: () => MapboxOverlay | null;
+    projectionRef: MutableRefObject<MapProjectionId>;
+  },
+) {
+  const {
+    projection, settings, shipLayerData, shipOverlayLayerData, shipData,
+    legacyHits, pairLinks, fcDashed, fleetCircles, pairRanges,
+    pairLinksInteractive, pairRangesInteractive, fcLinesInteractive, fleetCirclesInteractive,
+    overlays, shipByMmsi, selectedMmsi, shipHighlightSet,
+    isHighlightedFleet, isHighlightedPair, isHighlightedMmsi,
+    clearDeckHoverPairs, clearDeckHoverMmsi, clearMapFleetHoverState,
+    setDeckHoverPairs, setDeckHoverMmsi, setMapFleetHoverState,
+    toFleetMmsiList, touchDeckHoverState, hasAuxiliarySelectModifier,
+    onDeckSelectOrHighlight, onSelectMmsi, onToggleHighlightMmsi,
+    ensureMercatorOverlay, projectionRef,
+  } = opts;
+
+  const legacyTargets = useMemo(() => {
+    if (!legacyHits) return [];
+    return shipData.filter((t) => legacyHits.has(t.mmsi));
+  }, [shipData, legacyHits]);
+
+  const legacyTargetsOrdered = useMemo(() => {
+    if (legacyTargets.length === 0) return legacyTargets;
+    const layer = [...legacyTargets];
+    layer.sort((a, b) => a.mmsi - b.mmsi);
+    return layer;
+  }, [legacyTargets]);
+
+  const legacyOverlayTargets = useMemo(() => {
+    if (shipHighlightSet.size === 0) return [];
+    return legacyTargets.filter((target) => shipHighlightSet.has(target.mmsi));
+  }, [legacyTargets, shipHighlightSet]);
+
+  // Mercator Deck layers
+  useEffect(() => {
+    const map = mapRef.current;
+    if (!map) return;
+    if (projection !== 'mercator' || projectionBusyRef.current) {
+      if (projection !== 'mercator') {
+        try {
+          if (overlayRef.current) overlayRef.current.setProps({ layers: [] } as never);
+        } catch {
+          // ignore
+        }
+      }
+      return;
+    }
+
+    const deckTarget = ensureMercatorOverlay();
+    if (!deckTarget) return;
+
+    const layers: unknown[] = [];
+    const overlayParams = DEPTH_DISABLED_PARAMS;
+    const clearDeckHover = () => {
+      touchDeckHoverState(false);
+    };
+    const isTargetShip = (mmsi: number) => (legacyHits ? legacyHits.has(mmsi) : false);
+    const shipOtherData: AisTarget[] = [];
+    const shipTargetData: AisTarget[] = [];
+    for (const t of shipLayerData) {
+      if (isTargetShip(t.mmsi)) shipTargetData.push(t);
+      else shipOtherData.push(t);
+    }
+    const shipOverlayOtherData: AisTarget[] = [];
+    const shipOverlayTargetData: AisTarget[] = [];
+    for (const t of shipOverlayLayerData) {
+      if (isTargetShip(t.mmsi)) shipOverlayTargetData.push(t);
+      else shipOverlayOtherData.push(t);
+    }
+
+    if (settings.showDensity) {
+      layers.push(
+        new HexagonLayer<AisTarget>({
+          id: 'density',
+          data: shipLayerData,
+          pickable: true,
+          extruded: true,
+          radius: 2500,
+          elevationScale: 35,
+          coverage: 0.92,
+          opacity: 0.35,
+          getPosition: (d) => [d.lon, d.lat],
+        }),
+      );
+    }
+
+    if (overlays.pairRange && pairRanges.length > 0) {
+      layers.push(
+        new ScatterplotLayer<PairRangeCircle>({
+          id: 'pair-range',
+          data: pairRanges,
+          pickable: true,
+          billboard: false,
+          parameters: overlayParams,
+          filled: false,
+          stroked: true,
+          radiusUnits: 'meters',
+          getRadius: (d) => d.radiusNm * 1852,
+          radiusMinPixels: 10,
+          lineWidthUnits: 'pixels',
+          getLineWidth: () => 1,
+          getLineColor: (d) => (d.warn ? PAIR_RANGE_WARN_DECK : PAIR_RANGE_NORMAL_DECK),
+          getPosition: (d) => d.center,
+          onHover: (info) => {
+            if (!info.object) { clearDeckHover(); return; }
+            touchDeckHoverState(true);
+            const p = info.object as PairRangeCircle;
+            setDeckHoverPairs([p.aMmsi, p.bMmsi]);
+            setDeckHoverMmsi([p.aMmsi, p.bMmsi]);
+            clearMapFleetHoverState();
+          },
+          onClick: (info) => {
+            if (!info.object) { onSelectMmsi(null); return; }
+            const obj = info.object as PairRangeCircle;
+            const sourceEvent = (info as { srcEvent?: { shiftKey?: boolean; ctrlKey?: boolean; metaKey?: boolean } | null }).srcEvent;
+            if (sourceEvent && hasAuxiliarySelectModifier(sourceEvent)) {
+              onToggleHighlightMmsi?.(obj.aMmsi);
+              onToggleHighlightMmsi?.(obj.bMmsi);
+              return;
+            }
+            onDeckSelectOrHighlight({ mmsi: obj.aMmsi });
+          },
+        }),
+      );
+    }
+
+    if (overlays.pairLines && (pairLinks?.length ?? 0) > 0) {
+      layers.push(
+        new LineLayer<PairLink>({
+          id: 'pair-lines',
+          data: pairLinks,
+          pickable: true,
+          parameters: overlayParams,
+          getSourcePosition: (d) => d.from,
+          getTargetPosition: (d) => d.to,
+          getColor: (d) => (d.warn ? PAIR_LINE_WARN_DECK : PAIR_LINE_NORMAL_DECK),
+          getWidth: (d) => (d.warn ? 2.2 : 1.4),
+          widthUnits: 'pixels',
+          onHover: (info) => {
+            if (!info.object) { clearDeckHover(); return; }
+            touchDeckHoverState(true);
+            const obj = info.object as PairLink;
+            setDeckHoverPairs([obj.aMmsi, obj.bMmsi]);
+            setDeckHoverMmsi([obj.aMmsi, obj.bMmsi]);
+            clearMapFleetHoverState();
+          },
+          onClick: (info) => {
+            if (!info.object) return;
+            const obj = info.object as PairLink;
+            const sourceEvent = (info as { srcEvent?: { shiftKey?: boolean; ctrlKey?: boolean; metaKey?: boolean } | null }).srcEvent;
+            if (sourceEvent && hasAuxiliarySelectModifier(sourceEvent)) {
+              onToggleHighlightMmsi?.(obj.aMmsi);
+              onToggleHighlightMmsi?.(obj.bMmsi);
+              return;
+            }
+            onDeckSelectOrHighlight({ mmsi: obj.aMmsi });
+          },
+        }),
+      );
+    }
+
+    if (overlays.fcLines && fcDashed.length > 0) {
+      layers.push(
+        new LineLayer<DashSeg>({
+          id: 'fc-lines',
+          data: fcDashed,
+          pickable: true,
+          parameters: overlayParams,
+          getSourcePosition: (d) => d.from,
+          getTargetPosition: (d) => d.to,
+          getColor: (d) => (d.suspicious ? FC_LINE_SUSPICIOUS_DECK : FC_LINE_NORMAL_DECK),
+          getWidth: () => 1.3,
+          widthUnits: 'pixels',
+          onHover: (info) => {
+            if (!info.object) { clearDeckHover(); return; }
+            touchDeckHoverState(true);
+            const obj = info.object as DashSeg;
+            if (obj.fromMmsi == null || obj.toMmsi == null) { clearDeckHover(); return; }
+            setDeckHoverPairs([obj.fromMmsi, obj.toMmsi]);
+            setDeckHoverMmsi([obj.fromMmsi, obj.toMmsi]);
+            clearMapFleetHoverState();
+          },
+          onClick: (info) => {
+            if (!info.object) return;
+            const obj = info.object as DashSeg;
+            if (obj.fromMmsi == null || obj.toMmsi == null) return;
+            const sourceEvent = (info as { srcEvent?: { shiftKey?: boolean; ctrlKey?: boolean; metaKey?: boolean } | null }).srcEvent;
+            if (sourceEvent && hasAuxiliarySelectModifier(sourceEvent)) {
+              onToggleHighlightMmsi?.(obj.fromMmsi);
+              onToggleHighlightMmsi?.(obj.toMmsi);
+              return;
+            }
+            onDeckSelectOrHighlight({ mmsi: obj.fromMmsi });
+          },
+        }),
+      );
+    }
+
+    if (overlays.fleetCircles && (fleetCircles?.length ?? 0) > 0) {
+      layers.push(
+        new ScatterplotLayer<FleetCircle>({
+          id: 'fleet-circles',
+          data: fleetCircles,
+          pickable: true,
+          billboard: false,
+          parameters: overlayParams,
+          filled: false,
+          stroked: true,
+          radiusUnits: 'meters',
+          getRadius: (d) => d.radiusNm * 1852,
+          lineWidthUnits: 'pixels',
+          getLineWidth: () => 1.1,
+          getLineColor: () => FLEET_RANGE_LINE_DECK,
+          getPosition: (d) => d.center,
+          onHover: (info) => {
+            if (!info.object) { clearDeckHover(); return; }
+            touchDeckHoverState(true);
+            const obj = info.object as FleetCircle;
+            const list = toFleetMmsiList(obj.vesselMmsis);
+            setMapFleetHoverState(obj.ownerKey || null, list);
+            setDeckHoverMmsi(list);
+            clearDeckHoverPairs();
+          },
+          onClick: (info) => {
+            if (!info.object) return;
+            const obj = info.object as FleetCircle;
+            const list = toFleetMmsiList(obj.vesselMmsis);
+            const sourceEvent = (info as { srcEvent?: { shiftKey?: boolean; ctrlKey?: boolean; metaKey?: boolean } | null }).srcEvent;
+            if (sourceEvent && hasAuxiliarySelectModifier(sourceEvent)) {
+              for (const mmsi of list) onToggleHighlightMmsi?.(mmsi);
+              return;
+            }
+            const first = list[0];
+            if (first != null) onDeckSelectOrHighlight({ mmsi: first });
+          },
+        }),
+      );
+      layers.push(
+        new ScatterplotLayer<FleetCircle>({
+          id: 'fleet-circles-fill',
+          data: fleetCircles,
+          pickable: false,
+          billboard: false,
+          parameters: overlayParams,
+          filled: true,
+          stroked: false,
+          radiusUnits: 'meters',
+          getRadius: (d) => d.radiusNm * 1852,
+          getFillColor: () => FLEET_RANGE_FILL_DECK,
+          getPosition: (d) => d.center,
+        }),
+      );
+    }
+
+    if (settings.showShips) {
+      const shipOnHover = (info: PickingInfo) => {
+        if (!info.object) { clearDeckHover(); return; }
+        touchDeckHoverState(true);
+        const obj = info.object as AisTarget;
+        setDeckHoverMmsi([obj.mmsi]);
+        clearDeckHoverPairs();
+        clearMapFleetHoverState();
+      };
+      const shipOnClick = (info: PickingInfo) => {
+        if (!info.object) { onSelectMmsi(null); return; }
+        onDeckSelectOrHighlight(
+          {
+            mmsi: (info.object as AisTarget).mmsi,
+            srcEvent: (info as { srcEvent?: { shiftKey?: boolean; ctrlKey?: boolean; metaKey?: boolean } | null }).srcEvent,
+          },
+          true,
+        );
+      };
+
+      if (shipOtherData.length > 0) {
+        layers.push(
+          new IconLayer<AisTarget>({
+            id: 'ships-other',
+            data: shipOtherData,
+            pickable: true,
+            billboard: false,
+            parameters: overlayParams,
+            iconAtlas: '/assets/ship.svg',
+            iconMapping: SHIP_ICON_MAPPING,
+            getIcon: () => 'ship',
+            getPosition: (d) => [d.lon, d.lat] as [number, number],
+            getAngle: (d) => -getDisplayHeading({ cog: d.cog, heading: d.heading }),
+            sizeUnits: 'pixels',
+            getSize: () => FLAT_SHIP_ICON_SIZE,
+            getColor: (d) => getShipColor(d, null, null, EMPTY_MMSI_SET),
+            onHover: shipOnHover,
+            onClick: shipOnClick,
+            alphaCutoff: 0.05,
+          }),
+        );
+      }
+
+      if (shipOverlayOtherData.length > 0) {
+        layers.push(
+          new IconLayer<AisTarget>({
+            id: 'ships-overlay-other',
+            data: shipOverlayOtherData,
+            pickable: false,
+            billboard: false,
+            parameters: overlayParams,
+            iconAtlas: '/assets/ship.svg',
+            iconMapping: SHIP_ICON_MAPPING,
+            getIcon: () => 'ship',
+            getPosition: (d) => [d.lon, d.lat] as [number, number],
+            getAngle: (d) => -getDisplayHeading({ cog: d.cog, heading: d.heading }),
+            sizeUnits: 'pixels',
+            getSize: (d) => {
+              if (selectedMmsi != null && d.mmsi === selectedMmsi) return FLAT_SHIP_ICON_SIZE_SELECTED;
+              if (shipHighlightSet.has(d.mmsi)) return FLAT_SHIP_ICON_SIZE_HIGHLIGHTED;
+              return 0;
+            },
+            getColor: (d) => getShipColor(d, selectedMmsi, null, shipHighlightSet),
+            alphaCutoff: 0.05,
+          }),
+        );
+      }
+
+      if (legacyTargetsOrdered.length > 0) {
+        layers.push(
+          new ScatterplotLayer<AisTarget>({
+            id: 'legacy-halo',
+            data: legacyTargetsOrdered,
+            pickable: false,
+            billboard: false,
+            parameters: overlayParams,
+            filled: false,
+            stroked: true,
+            radiusUnits: 'pixels',
+            getRadius: () => FLAT_LEGACY_HALO_RADIUS,
+            lineWidthUnits: 'pixels',
+            getLineWidth: () => 2,
+            getLineColor: () => HALO_OUTLINE_COLOR,
+            getPosition: (d) => [d.lon, d.lat] as [number, number],
+          }),
+        );
+      }
+
+      if (shipTargetData.length > 0) {
+        layers.push(
+          new IconLayer<AisTarget>({
+            id: 'ships-target',
+            data: shipTargetData,
+            pickable: true,
+            billboard: false,
+            parameters: overlayParams,
+            iconAtlas: '/assets/ship.svg',
+            iconMapping: SHIP_ICON_MAPPING,
+            getIcon: () => 'ship',
+            getPosition: (d) => [d.lon, d.lat] as [number, number],
+            getAngle: (d) => -getDisplayHeading({ cog: d.cog, heading: d.heading }),
+            sizeUnits: 'pixels',
+            getSize: () => FLAT_SHIP_ICON_SIZE,
+            getColor: (d) => getShipColor(d, null, legacyHits?.get(d.mmsi)?.shipCode ?? null, EMPTY_MMSI_SET),
+            onHover: shipOnHover,
+            onClick: shipOnClick,
+            alphaCutoff: 0.05,
+          }),
+        );
+      }
+    }
+
+    if (overlays.pairRange && pairRangesInteractive.length > 0) {
+      layers.push(new ScatterplotLayer<PairRangeCircle>({ id: 'pair-range-overlay', data: pairRangesInteractive, pickable: false, billboard: false, parameters: overlayParams, filled: false, stroked: true, radiusUnits: 'meters', getRadius: (d) => d.radiusNm * 1852, radiusMinPixels: 10, lineWidthUnits: 'pixels', getLineWidth: () => 2.2, getLineColor: (d) => (d.warn ? PAIR_RANGE_WARN_DECK_HL : PAIR_RANGE_NORMAL_DECK_HL), getPosition: (d) => d.center }));
+    }
+    if (overlays.pairLines && pairLinksInteractive.length > 0) {
+      layers.push(new LineLayer<PairLink>({ id: 'pair-lines-overlay', data: pairLinksInteractive, pickable: false, parameters: overlayParams, getSourcePosition: (d) => d.from, getTargetPosition: (d) => d.to, getColor: (d) => (d.warn ? PAIR_LINE_WARN_DECK_HL : PAIR_LINE_NORMAL_DECK_HL), getWidth: () => 2.6, widthUnits: 'pixels' }));
+    }
+    if (overlays.fcLines && fcLinesInteractive.length > 0) {
+      layers.push(new LineLayer<DashSeg>({ id: 'fc-lines-overlay', data: fcLinesInteractive, pickable: false, parameters: overlayParams, getSourcePosition: (d) => d.from, getTargetPosition: (d) => d.to, getColor: (d) => (d.suspicious ? FC_LINE_SUSPICIOUS_DECK_HL : FC_LINE_NORMAL_DECK_HL), getWidth: () => 1.9, widthUnits: 'pixels' }));
+    }
+    if (overlays.fleetCircles && fleetCirclesInteractive.length > 0) {
+      layers.push(new ScatterplotLayer<FleetCircle>({ id: 'fleet-circles-overlay-fill', data: fleetCirclesInteractive, pickable: false, billboard: false, parameters: overlayParams, filled: true, stroked: false, radiusUnits: 'meters', getRadius: (d) => d.radiusNm * 1852, getFillColor: () => FLEET_RANGE_FILL_DECK_HL }));
+      layers.push(new ScatterplotLayer<FleetCircle>({ id: 'fleet-circles-overlay', data: fleetCirclesInteractive, pickable: false, billboard: false, parameters: overlayParams, filled: false, stroked: true, radiusUnits: 'meters', getRadius: (d) => d.radiusNm * 1852, lineWidthUnits: 'pixels', getLineWidth: () => 1.8, getLineColor: () => FLEET_RANGE_LINE_DECK_HL, getPosition: (d) => d.center }));
+    }
+
+    if (settings.showShips && legacyOverlayTargets.length > 0) {
+      layers.push(new ScatterplotLayer<AisTarget>({ id: 'legacy-halo-overlay', data: legacyOverlayTargets, pickable: false, billboard: false, parameters: overlayParams, filled: false, stroked: true, radiusUnits: 'pixels', getRadius: (d) => { if (selectedMmsi && d.mmsi === selectedMmsi) return FLAT_LEGACY_HALO_RADIUS_SELECTED; return FLAT_LEGACY_HALO_RADIUS_HIGHLIGHTED; }, lineWidthUnits: 'pixels', getLineWidth: (d) => (selectedMmsi && d.mmsi === selectedMmsi ? 2.5 : 2.2), getLineColor: (d) => { if (selectedMmsi && d.mmsi === selectedMmsi) return HALO_OUTLINE_COLOR_SELECTED; if (shipHighlightSet.has(d.mmsi)) return HALO_OUTLINE_COLOR_HIGHLIGHTED; return HALO_OUTLINE_COLOR; }, getPosition: (d) => [d.lon, d.lat] as [number, number] }));
+    }
+
+    if (settings.showShips && shipOverlayLayerData.filter((t) => legacyHits?.has(t.mmsi)).length > 0) {
+      const shipOverlayTargetData2 = shipOverlayLayerData.filter((t) => legacyHits?.has(t.mmsi));
+      layers.push(new IconLayer<AisTarget>({ id: 'ships-overlay-target', data: shipOverlayTargetData2, pickable: false, billboard: false, parameters: overlayParams, iconAtlas: '/assets/ship.svg', iconMapping: SHIP_ICON_MAPPING, getIcon: () => 'ship', getPosition: (d) => [d.lon, d.lat] as [number, number], getAngle: (d) => -getDisplayHeading({ cog: d.cog, heading: d.heading }), sizeUnits: 'pixels', getSize: (d) => { if (selectedMmsi != null && d.mmsi === selectedMmsi) return FLAT_SHIP_ICON_SIZE_SELECTED; if (shipHighlightSet.has(d.mmsi)) return FLAT_SHIP_ICON_SIZE_HIGHLIGHTED; return 0; }, getColor: (d) => { if (!shipHighlightSet.has(d.mmsi) && !(selectedMmsi != null && d.mmsi === selectedMmsi)) return [0, 0, 0, 0]; return getShipColor(d, selectedMmsi, legacyHits?.get(d.mmsi)?.shipCode ?? null, shipHighlightSet); } }));
+    }
+
+    const normalizedLayers = sanitizeDeckLayerList(layers);
+    const deckProps = {
+      layers: normalizedLayers,
+      getTooltip: (info: PickingInfo) => {
+        if (!info.object) return null;
+        if (info.layer && info.layer.id === 'density') {
+          // eslint-disable-next-line @typescript-eslint/no-explicit-any
+          const o: any = info.object;
+          const n = Array.isArray(o?.points) ? o.points.length : 0;
+          return { text: `AIS density: ${n}` };
+        }
+        // eslint-disable-next-line @typescript-eslint/no-explicit-any
+        const obj: any = info.object;
+        if (typeof obj.mmsi === 'number') {
+          return getShipTooltipHtml({ mmsi: obj.mmsi, targetByMmsi: shipByMmsi, legacyHits });
+        }
+        if (info.layer && info.layer.id === 'pair-lines') {
+          const aMmsi = toSafeNumber(obj.aMmsi);
+          const bMmsi = toSafeNumber(obj.bMmsi);
+          if (aMmsi == null || bMmsi == null) return null;
+          return getPairLinkTooltipHtml({ warn: !!obj.warn, distanceNm: toSafeNumber(obj.distanceNm), aMmsi, bMmsi, legacyHits, targetByMmsi: shipByMmsi });
+        }
+        if (info.layer && info.layer.id === 'fc-lines') {
+          const fcMmsi = toSafeNumber(obj.fcMmsi);
+          const otherMmsi = toSafeNumber(obj.otherMmsi);
+          if (fcMmsi == null || otherMmsi == null) return null;
+          return getFcLinkTooltipHtml({ suspicious: !!obj.suspicious, distanceNm: toSafeNumber(obj.distanceNm), fcMmsi, otherMmsi, legacyHits, targetByMmsi: shipByMmsi });
+        }
+        if (info.layer && info.layer.id === 'pair-range') {
+          const aMmsi = toSafeNumber(obj.aMmsi);
+          const bMmsi = toSafeNumber(obj.bMmsi);
+          if (aMmsi == null || bMmsi == null) return null;
+          return getRangeTooltipHtml({ warn: !!obj.warn, distanceNm: toSafeNumber(obj.distanceNm), aMmsi, bMmsi, legacyHits });
+        }
+        if (info.layer && info.layer.id === 'fleet-circles') {
+          return getFleetCircleTooltipHtml({ ownerKey: String(obj.ownerKey ?? ''), ownerLabel: String(obj.ownerKey ?? ''), count: Number(obj.count ?? 0) });
+        }
+        return null;
+      },
+      onClick: (info: PickingInfo) => {
+        if (!info.object) { onSelectMmsi(null); return; }
+        if (info.layer && info.layer.id === 'density') return;
+        // eslint-disable-next-line @typescript-eslint/no-explicit-any
+        const obj: any = info.object;
+        if (typeof obj.mmsi === 'number') {
+          const t = obj as AisTarget;
+          const sourceEvent = (info as { srcEvent?: { shiftKey?: boolean; ctrlKey?: boolean; metaKey?: boolean } | null }).srcEvent;
+          if (sourceEvent && hasAuxiliarySelectModifier(sourceEvent)) {
+            onToggleHighlightMmsi?.(t.mmsi);
+            return;
+          }
+          onSelectMmsi(t.mmsi);
+          const clickOpts = { center: [t.lon, t.lat] as [number, number], zoom: Math.max(map.getZoom(), 10), duration: 600 };
+          if (projectionRef.current === 'globe') {
+            map.flyTo(clickOpts);
+          } else {
+            map.easeTo(clickOpts);
+          }
+        }
+      },
+    };
+
+    try {
+      deckTarget.setProps(deckProps as never);
+    } catch (e) {
+      console.error('Failed to apply base mercator deck props. Falling back to empty layer set.', e);
+      try {
+        deckTarget.setProps({ ...deckProps, layers: [] as unknown[] } as never);
+      } catch {
+        // Ignore secondary failure.
+      }
+    }
+  }, [
+    ensureMercatorOverlay,
+    projection,
+    shipLayerData,
+    shipByMmsi,
+    pairRanges,
+    pairLinks,
+    fcDashed,
+    fleetCircles,
+    legacyTargetsOrdered,
+    legacyHits,
+    legacyOverlayTargets,
+    shipOverlayLayerData,
+    pairRangesInteractive,
+    pairLinksInteractive,
+    fcLinesInteractive,
+    fleetCirclesInteractive,
+    overlays.pairRange,
+    overlays.pairLines,
+    overlays.fcLines,
+    overlays.fleetCircles,
+    settings.showDensity,
+    settings.showShips,
+    onDeckSelectOrHighlight,
+    onSelectMmsi,
+    onToggleHighlightMmsi,
+    setDeckHoverPairs,
+    clearMapFleetHoverState,
+    setDeckHoverMmsi,
+    clearDeckHoverMmsi,
+    toFleetMmsiList,
+    touchDeckHoverState,
+    hasAuxiliarySelectModifier,
+  ]);
+
+  // Globe Deck overlay
+  useEffect(() => {
+    const map = mapRef.current;
+    if (!map || projection !== 'globe' || projectionBusyRef.current) return;
+    const deckTarget = globeDeckLayerRef.current;
+    if (!deckTarget) return;
+
+    const overlayParams = GLOBE_OVERLAY_PARAMS;
+    const globeLayers: unknown[] = [];
+
+    if (overlays.pairRange && pairRanges.length > 0) {
+      globeLayers.push(new ScatterplotLayer<PairRangeCircle>({ id: 'pair-range-globe', data: pairRanges, pickable: true, billboard: false, parameters: overlayParams, filled: false, stroked: true, radiusUnits: 'meters', getRadius: (d) => d.radiusNm * 1852, radiusMinPixels: 10, lineWidthUnits: 'pixels', getLineWidth: (d) => (isHighlightedPair(d.aMmsi, d.bMmsi) ? 2.2 : 1), getLineColor: (d) => { const hl = isHighlightedPair(d.aMmsi, d.bMmsi); if (hl) return d.warn ? PAIR_RANGE_WARN_DECK_HL : PAIR_RANGE_NORMAL_DECK_HL; return d.warn ? PAIR_RANGE_WARN_DECK : PAIR_RANGE_NORMAL_DECK; }, getPosition: (d) => d.center, onHover: (info) => { if (!info.object) { clearDeckHoverPairs(); clearDeckHoverMmsi(); return; } touchDeckHoverState(true); const p = info.object as PairRangeCircle; setDeckHoverPairs([p.aMmsi, p.bMmsi]); setDeckHoverMmsi([p.aMmsi, p.bMmsi]); clearMapFleetHoverState(); } }));
+    }
+
+    if (overlays.pairLines && (pairLinks?.length ?? 0) > 0) {
+      const links = pairLinks || [];
+      globeLayers.push(new LineLayer<PairLink>({ id: 'pair-lines-globe', data: links, pickable: true, parameters: overlayParams, getSourcePosition: (d) => d.from, getTargetPosition: (d) => d.to, getColor: (d) => { const hl = isHighlightedPair(d.aMmsi, d.bMmsi); if (hl) return d.warn ? PAIR_LINE_WARN_DECK_HL : PAIR_LINE_NORMAL_DECK_HL; return d.warn ? PAIR_LINE_WARN_DECK : PAIR_LINE_NORMAL_DECK; }, getWidth: (d) => (isHighlightedPair(d.aMmsi, d.bMmsi) ? 2.6 : d.warn ? 2.2 : 1.4), widthUnits: 'pixels', onHover: (info) => { if (!info.object) { clearDeckHoverPairs(); clearDeckHoverMmsi(); return; } touchDeckHoverState(true); const obj = info.object as PairLink; setDeckHoverPairs([obj.aMmsi, obj.bMmsi]); setDeckHoverMmsi([obj.aMmsi, obj.bMmsi]); clearMapFleetHoverState(); } }));
+    }
+
+    if (overlays.fcLines && fcDashed.length > 0) {
+      globeLayers.push(new LineLayer<DashSeg>({ id: 'fc-lines-globe', data: fcDashed, pickable: true, parameters: overlayParams, getSourcePosition: (d) => d.from, getTargetPosition: (d) => d.to, getColor: (d) => { const ih = [d.fromMmsi, d.toMmsi].some((v) => isHighlightedMmsi(v ?? -1)); if (ih) return d.suspicious ? FC_LINE_SUSPICIOUS_DECK_HL : FC_LINE_NORMAL_DECK_HL; return d.suspicious ? FC_LINE_SUSPICIOUS_DECK : FC_LINE_NORMAL_DECK; }, getWidth: (d) => { const ih = [d.fromMmsi, d.toMmsi].some((v) => isHighlightedMmsi(v ?? -1)); return ih ? 1.9 : 1.3; }, widthUnits: 'pixels', onHover: (info) => { if (!info.object) { clearDeckHoverPairs(); clearDeckHoverMmsi(); return; } touchDeckHoverState(true); const obj = info.object as DashSeg; if (obj.fromMmsi == null || obj.toMmsi == null) { clearDeckHoverPairs(); clearDeckHoverMmsi(); return; } setDeckHoverPairs([obj.fromMmsi, obj.toMmsi]); setDeckHoverMmsi([obj.fromMmsi, obj.toMmsi]); clearMapFleetHoverState(); } }));
+    }
+
+    if (overlays.fleetCircles && (fleetCircles?.length ?? 0) > 0) {
+      const circles = fleetCircles || [];
+      globeLayers.push(new ScatterplotLayer<FleetCircle>({ id: 'fleet-circles-globe', data: circles, pickable: true, billboard: false, parameters: overlayParams, filled: false, stroked: true, radiusUnits: 'meters', getRadius: (d) => d.radiusNm * 1852, lineWidthUnits: 'pixels', getLineWidth: (d) => (isHighlightedFleet(d.ownerKey, d.vesselMmsis) ? 1.8 : 1.1), getLineColor: (d) => (isHighlightedFleet(d.ownerKey, d.vesselMmsis) ? FLEET_RANGE_LINE_DECK_HL : FLEET_RANGE_LINE_DECK), getPosition: (d) => d.center, onHover: (info) => { if (!info.object) { clearDeckHoverPairs(); clearDeckHoverMmsi(); clearMapFleetHoverState(); return; } touchDeckHoverState(true); const obj = info.object as FleetCircle; const list = toFleetMmsiList(obj.vesselMmsis); setMapFleetHoverState(obj.ownerKey || null, list); setDeckHoverMmsi(list); clearDeckHoverPairs(); } }));
+      globeLayers.push(new ScatterplotLayer<FleetCircle>({ id: 'fleet-circles-fill-globe', data: circles, pickable: false, billboard: false, parameters: overlayParams, filled: true, stroked: false, radiusUnits: 'meters', getRadius: (d) => d.radiusNm * 1852, getFillColor: (d) => (isHighlightedFleet(d.ownerKey, d.vesselMmsis) ? FLEET_RANGE_FILL_DECK_HL : FLEET_RANGE_FILL_DECK), getPosition: (d) => d.center }));
+    }
+
+    if (settings.showShips && legacyTargetsOrdered.length > 0) {
+      globeLayers.push(new ScatterplotLayer<AisTarget>({ id: 'legacy-halo-globe', data: legacyTargetsOrdered, pickable: false, billboard: false, parameters: overlayParams, filled: false, stroked: true, radiusUnits: 'pixels', getRadius: (d) => { if (selectedMmsi && d.mmsi === selectedMmsi) return FLAT_LEGACY_HALO_RADIUS_SELECTED; return FLAT_LEGACY_HALO_RADIUS; }, lineWidthUnits: 'pixels', getLineWidth: (d) => (selectedMmsi && d.mmsi === selectedMmsi ? 2.5 : 2), getLineColor: (d) => { if (selectedMmsi && d.mmsi === selectedMmsi) return HALO_OUTLINE_COLOR_SELECTED; return HALO_OUTLINE_COLOR; }, getPosition: (d) => [d.lon, d.lat] as [number, number] }));
+    }
+
+    const normalizedLayers = sanitizeDeckLayerList(globeLayers);
+    const globeDeckProps = { layers: normalizedLayers, getTooltip: undefined, onClick: undefined };
+
+    try {
+      deckTarget.setProps(globeDeckProps as never);
+    } catch (e) {
+      console.error('Failed to apply globe deck props. Falling back to empty deck layer set.', e);
+      try {
+        deckTarget.setProps({ ...globeDeckProps, layers: [] as unknown[] } as never);
+      } catch {
+        // Ignore secondary failure.
+      }
+    }
+  }, [
+    projection,
+    pairRanges,
+    pairLinks,
+    fcDashed,
+    fleetCircles,
+    legacyTargetsOrdered,
+    overlays.pairRange,
+    overlays.pairLines,
+    overlays.fcLines,
+    overlays.fleetCircles,
+    settings.showShips,
+    selectedMmsi,
+    isHighlightedFleet,
+    isHighlightedPair,
+    clearDeckHoverPairs,
+    clearDeckHoverMmsi,
+    clearMapFleetHoverState,
+    setDeckHoverPairs,
+    setDeckHoverMmsi,
+    setMapFleetHoverState,
+    toFleetMmsiList,
+    touchDeckHoverState,
+    legacyHits,
+  ]);
+}

apps/web/src/widgets/map3d/hooks/useFlyTo.ts

@@ -0,0 +1,61 @@
+import { useEffect, type MutableRefObject } from 'react';
+import type maplibregl from 'maplibre-gl';
+import { onMapStyleReady } from '../lib/mapCore';
+import type { MapProjectionId } from '../types';
+
+export function useFlyTo(
+  mapRef: MutableRefObject<maplibregl.Map | null>,
+  projectionRef: MutableRefObject<MapProjectionId>,
+  opts: {
+    selectedMmsi: number | null;
+    shipData: { mmsi: number; lon: number; lat: number }[];
+    fleetFocusId: string | number | undefined;
+    fleetFocusLon: number | undefined;
+    fleetFocusLat: number | undefined;
+    fleetFocusZoom: number | undefined;
+  },
+) {
+  const { selectedMmsi, shipData, fleetFocusId, fleetFocusLon, fleetFocusLat, fleetFocusZoom } = opts;
+
+  useEffect(() => {
+    const map = mapRef.current;
+    if (!map) return;
+    if (!selectedMmsi) return;
+    const t = shipData.find((x) => x.mmsi === selectedMmsi);
+    if (!t) return;
+    const flyOpts = { center: [t.lon, t.lat] as [number, number], zoom: Math.max(map.getZoom(), 10), duration: 600 };
+    if (projectionRef.current === 'globe') {
+      map.flyTo(flyOpts);
+    } else {
+      map.easeTo(flyOpts);
+    }
+  }, [selectedMmsi, shipData]);
+
+  useEffect(() => {
+    const map = mapRef.current;
+    if (!map || fleetFocusLon == null || fleetFocusLat == null || !Number.isFinite(fleetFocusLon) || !Number.isFinite(fleetFocusLat))
+      return;
+    const lon = fleetFocusLon;
+    const lat = fleetFocusLat;
+    const zoom = fleetFocusZoom ?? 10;
+
+    const apply = () => {
+      const flyOpts = { center: [lon, lat] as [number, number], zoom, duration: 700 };
+      if (projectionRef.current === 'globe') {
+        map.flyTo(flyOpts);
+      } else {
+        map.easeTo(flyOpts);
+      }
+    };
+
+    if (map.isStyleLoaded()) {
+      apply();
+      return;
+    }
+
+    const stop = onMapStyleReady(map, apply);
+    return () => {
+      stop();
+    };
+  }, [fleetFocusId, fleetFocusLon, fleetFocusLat, fleetFocusZoom]);
+}

apps/web/src/widgets/map3d/hooks/useGlobeInteraction.ts

@@ -0,0 +1,318 @@
+import { useCallback, useEffect, useRef, type MutableRefObject } from 'react';
+import maplibregl from 'maplibre-gl';
+import type { AisTarget } from '../../../entities/aisTarget/model/types';
+import type { LegacyVesselInfo } from '../../../entities/legacyVessel/model/types';
+import type { MapToggleState } from '../../../features/mapToggles/MapToggles';
+import type { Map3DSettings, MapProjectionId } from '../types';
+import { toIntMmsi, toSafeNumber } from '../lib/setUtils';
+import {
+  getShipTooltipHtml,
+  getPairLinkTooltipHtml,
+  getFcLinkTooltipHtml,
+  getRangeTooltipHtml,
+  getFleetCircleTooltipHtml,
+} from '../lib/tooltips';
+import { getZoneIdFromProps, getZoneDisplayNameFromProps } from '../lib/zoneUtils';
+
+export function useGlobeInteraction(
+  mapRef: MutableRefObject<maplibregl.Map | null>,
+  projectionBusyRef: MutableRefObject<boolean>,
+  opts: {
+    projection: MapProjectionId;
+    settings: Map3DSettings;
+    overlays: MapToggleState;
+    targets: AisTarget[];
+    shipData: AisTarget[];
+    shipByMmsi: Map<number, AisTarget>;
+    selectedMmsi: number | null;
+    hoveredZoneId: string | null;
+    legacyHits: Map<number, LegacyVesselInfo> | null | undefined;
+    clearDeckHoverPairs: () => void;
+    clearDeckHoverMmsi: () => void;
+    clearMapFleetHoverState: () => void;
+    setDeckHoverPairs: (next: number[]) => void;
+    setDeckHoverMmsi: (next: number[]) => void;
+    setMapFleetHoverState: (ownerKey: string | null, vesselMmsis: number[]) => void;
+    setHoveredZoneId: (updater: (prev: string | null) => string | null) => void;
+  },
+) {
+  const {
+    projection, legacyHits, shipByMmsi,
+    clearDeckHoverPairs, clearDeckHoverMmsi, clearMapFleetHoverState,
+    setDeckHoverPairs, setDeckHoverMmsi, setMapFleetHoverState, setHoveredZoneId,
+  } = opts;
+
+  const mapTooltipRef = useRef<maplibregl.Popup | null>(null);
+
+  const clearGlobeTooltip = useCallback(() => {
+    if (!mapTooltipRef.current) return;
+    try {
+      mapTooltipRef.current.remove();
+    } catch {
+      // ignore
+    }
+    mapTooltipRef.current = null;
+  }, []);
+
+  // eslint-disable-next-line react-hooks/preserve-manual-memoization
+  const setGlobeTooltip = useCallback((lngLat: maplibregl.LngLatLike, tooltipHtml: string) => {
+    const map = mapRef.current;
+    if (!map || !map.isStyleLoaded()) return;
+    if (!mapTooltipRef.current) {
+      mapTooltipRef.current = new maplibregl.Popup({
+        closeButton: false,
+        closeOnClick: false,
+        maxWidth: '360px',
+        className: 'maplibre-tooltip-popup',
+      });
+    }
+
+    const container = document.createElement('div');
+    container.className = 'maplibre-tooltip-popup__content';
+    container.innerHTML = tooltipHtml;
+
+    mapTooltipRef.current.setLngLat(lngLat).setDOMContent(container).addTo(map);
+  }, []);
+
+  const buildGlobeFeatureTooltip = useCallback(
+    (feature: { properties?: Record<string, unknown> | null; layer?: { id?: string } } | null | undefined) => {
+      if (!feature) return null;
+      const props = feature.properties || {};
+      const layerId = feature.layer?.id;
+
+      const maybeMmsi = toIntMmsi(props.mmsi);
+      if (maybeMmsi != null && maybeMmsi > 0) {
+        return getShipTooltipHtml({ mmsi: maybeMmsi, targetByMmsi: shipByMmsi, legacyHits });
+      }
+
+      if (layerId === 'pair-lines-ml') {
+        const warn = props.warn === true;
+        const aMmsi = toIntMmsi(props.aMmsi);
+        const bMmsi = toIntMmsi(props.bMmsi);
+        if (aMmsi == null || bMmsi == null) return null;
+        return getPairLinkTooltipHtml({
+          warn, distanceNm: toSafeNumber(props.distanceNm),
+          aMmsi, bMmsi, legacyHits, targetByMmsi: shipByMmsi,
+        });
+      }
+
+      if (layerId === 'fc-lines-ml') {
+        const fcMmsi = toIntMmsi(props.fcMmsi);
+        const otherMmsi = toIntMmsi(props.otherMmsi);
+        if (fcMmsi == null || otherMmsi == null) return null;
+        return getFcLinkTooltipHtml({
+          suspicious: props.suspicious === true,
+          distanceNm: toSafeNumber(props.distanceNm),
+          fcMmsi, otherMmsi, legacyHits, targetByMmsi: shipByMmsi,
+        });
+      }
+
+      if (layerId === 'pair-range-ml') {
+        const aMmsi = toIntMmsi(props.aMmsi);
+        const bMmsi = toIntMmsi(props.bMmsi);
+        if (aMmsi == null || bMmsi == null) return null;
+        return getRangeTooltipHtml({
+          warn: props.warn === true,
+          distanceNm: toSafeNumber(props.distanceNm),
+          aMmsi, bMmsi, legacyHits,
+        });
+      }
+
+      if (layerId === 'fleet-circles-ml' || layerId === 'fleet-circles-ml-fill') {
+        return getFleetCircleTooltipHtml({
+          ownerKey: String(props.ownerKey ?? ''),
+          ownerLabel: String(props.ownerLabel ?? props.ownerKey ?? ''),
+          count: Number(props.count ?? 0),
+        });
+      }
+
+      const zoneLabel = getZoneDisplayNameFromProps(props);
+      if (zoneLabel) {
+        return { html: `<div style="font-size: 12px; font-family: system-ui;">${zoneLabel}</div>` };
+      }
+
+      return null;
+    },
+    [legacyHits, shipByMmsi],
+  );
+
+  useEffect(() => {
+    const map = mapRef.current;
+    if (!map) return;
+
+    const clearDeckGlobeHoverState = () => {
+      clearDeckHoverMmsi();
+      clearDeckHoverPairs();
+      setHoveredZoneId((prev) => (prev === null ? prev : null));
+      clearMapFleetHoverState();
+    };
+
+    const resetGlobeHoverStates = () => {
+      clearDeckHoverMmsi();
+      clearDeckHoverPairs();
+      setHoveredZoneId((prev) => (prev === null ? prev : null));
+      clearMapFleetHoverState();
+    };
+
+    const normalizeMmsiList = (value: unknown): number[] => {
+      if (!Array.isArray(value)) return [];
+      const out: number[] = [];
+      for (const n of value) {
+        const m = toIntMmsi(n);
+        if (m != null) out.push(m);
+      }
+      return out;
+    };
+
+    const onMouseMove = (e: maplibregl.MapMouseEvent) => {
+      if (projection !== 'globe') {
+        clearGlobeTooltip();
+        resetGlobeHoverStates();
+        return;
+      }
+      if (projectionBusyRef.current) {
+        resetGlobeHoverStates();
+        clearGlobeTooltip();
+        return;
+      }
+      if (!map.isStyleLoaded()) {
+        clearDeckGlobeHoverState();
+        clearGlobeTooltip();
+        return;
+      }
+
+      let candidateLayerIds: string[] = [];
+      try {
+        candidateLayerIds = [
+          'ships-globe', 'ships-globe-halo', 'ships-globe-outline',
+          'pair-lines-ml', 'fc-lines-ml',
+          'fleet-circles-ml', 'fleet-circles-ml-fill',
+          'pair-range-ml',
+          'zones-fill', 'zones-line', 'zones-label',
+        ].filter((id) => map.getLayer(id));
+      } catch {
+        candidateLayerIds = [];
+      }
+
+      if (candidateLayerIds.length === 0) {
+        resetGlobeHoverStates();
+        clearGlobeTooltip();
+        return;
+      }
+
+      let rendered: Array<{ properties?: Record<string, unknown> | null; layer?: { id?: string } }> = [];
+      try {
+        rendered = map.queryRenderedFeatures(e.point, { layers: candidateLayerIds }) as unknown as Array<{
+          properties?: Record<string, unknown> | null;
+          layer?: { id?: string };
+        }>;
+      } catch {
+        rendered = [];
+      }
+
+      const priority = [
+        'ships-globe', 'ships-globe-halo', 'ships-globe-outline',
+        'pair-lines-ml', 'fc-lines-ml', 'pair-range-ml',
+        'fleet-circles-ml-fill', 'fleet-circles-ml',
+        'zones-fill', 'zones-line', 'zones-label',
+      ];
+
+      const first = priority.map((id) => rendered.find((r) => r.layer?.id === id)).find(Boolean) as
+        | { properties?: Record<string, unknown> | null; layer?: { id?: string } }
+        | undefined;
+
+      if (!first) {
+        resetGlobeHoverStates();
+        clearGlobeTooltip();
+        return;
+      }
+
+      const layerId = first.layer?.id;
+      const props = first.properties || {};
+      const isShipLayer = layerId === 'ships-globe' || layerId === 'ships-globe-halo' || layerId === 'ships-globe-outline';
+      const isPairLayer = layerId === 'pair-lines-ml' || layerId === 'pair-range-ml';
+      const isFcLayer = layerId === 'fc-lines-ml';
+      const isFleetLayer = layerId === 'fleet-circles-ml' || layerId === 'fleet-circles-ml-fill';
+      const isZoneLayer = layerId === 'zones-fill' || layerId === 'zones-line' || layerId === 'zones-label';
+
+      if (isShipLayer) {
+        const mmsi = toIntMmsi(props.mmsi);
+        setDeckHoverMmsi(mmsi == null ? [] : [mmsi]);
+        clearDeckHoverPairs();
+        clearMapFleetHoverState();
+        setHoveredZoneId((prev) => (prev === null ? prev : null));
+      } else if (isPairLayer) {
+        const aMmsi = toIntMmsi(props.aMmsi);
+        const bMmsi = toIntMmsi(props.bMmsi);
+        setDeckHoverPairs([...(aMmsi == null ? [] : [aMmsi]), ...(bMmsi == null ? [] : [bMmsi])]);
+        clearDeckHoverMmsi();
+        clearMapFleetHoverState();
+        setHoveredZoneId((prev) => (prev === null ? prev : null));
+      } else if (isFcLayer) {
+        const from = toIntMmsi(props.fcMmsi);
+        const to = toIntMmsi(props.otherMmsi);
+        const fromTo = [from, to].filter((v): v is number => v != null);
+        setDeckHoverPairs(fromTo);
+        setDeckHoverMmsi(fromTo);
+        clearMapFleetHoverState();
+        setHoveredZoneId((prev) => (prev === null ? prev : null));
+      } else if (isFleetLayer) {
+        const ownerKey = String(props.ownerKey ?? '');
+        const list = normalizeMmsiList(props.vesselMmsis);
+        setMapFleetHoverState(ownerKey || null, list);
+        clearDeckHoverMmsi();
+        clearDeckHoverPairs();
+        setHoveredZoneId((prev) => (prev === null ? prev : null));
+      } else if (isZoneLayer) {
+        clearMapFleetHoverState();
+        clearDeckHoverMmsi();
+        clearDeckHoverPairs();
+        const zoneId = getZoneIdFromProps(props);
+        setHoveredZoneId(() => zoneId || null);
+      } else {
+        resetGlobeHoverStates();
+      }
+
+      const tooltip = buildGlobeFeatureTooltip(first);
+      if (!tooltip) {
+        if (!isZoneLayer) {
+          resetGlobeHoverStates();
+        }
+        clearGlobeTooltip();
+        return;
+      }
+
+      const content = tooltip?.html ?? '';
+      if (content) {
+        setGlobeTooltip(e.lngLat, content);
+        return;
+      }
+      clearGlobeTooltip();
+    };
+
+    const onMouseOut = () => {
+      resetGlobeHoverStates();
+      clearGlobeTooltip();
+    };
+
+    map.on('mousemove', onMouseMove);
+    map.on('mouseout', onMouseOut);
+
+    return () => {
+      map.off('mousemove', onMouseMove);
+      map.off('mouseout', onMouseOut);
+      clearGlobeTooltip();
+    };
+  }, [
+    projection,
+    buildGlobeFeatureTooltip,
+    clearGlobeTooltip,
+    clearMapFleetHoverState,
+    clearDeckHoverPairs,
+    clearDeckHoverMmsi,
+    setDeckHoverPairs,
+    setDeckHoverMmsi,
+    setMapFleetHoverState,
+    setGlobeTooltip,
+  ]);
+}

apps/web/src/widgets/map3d/hooks/useGlobeOverlays.ts

@@ -0,0 +1,618 @@
+import { useCallback, useEffect, type MutableRefObject } from 'react';
+import type maplibregl from 'maplibre-gl';
+import type { GeoJSONSource, GeoJSONSourceSpecification, LayerSpecification } from 'maplibre-gl';
+import type { FcLink, FleetCircle, PairLink } from '../../../features/legacyDashboard/model/types';
+import type { MapToggleState } from '../../../features/mapToggles/MapToggles';
+import type { DashSeg, MapProjectionId, PairRangeCircle } from '../types';
+import {
+  PAIR_LINE_NORMAL_ML, PAIR_LINE_WARN_ML,
+  PAIR_LINE_NORMAL_ML_HL, PAIR_LINE_WARN_ML_HL,
+  PAIR_RANGE_NORMAL_ML, PAIR_RANGE_WARN_ML,
+  PAIR_RANGE_NORMAL_ML_HL, PAIR_RANGE_WARN_ML_HL,
+  FC_LINE_NORMAL_ML, FC_LINE_SUSPICIOUS_ML,
+  FC_LINE_NORMAL_ML_HL, FC_LINE_SUSPICIOUS_ML_HL,
+  FLEET_FILL_ML, FLEET_FILL_ML_HL,
+  FLEET_LINE_ML, FLEET_LINE_ML_HL,
+} from '../constants';
+import { makeUniqueSorted } from '../lib/setUtils';
+import {
+  makePairLinkFeatureId,
+  makeFcSegmentFeatureId,
+  makeFleetCircleFeatureId,
+} from '../lib/featureIds';
+import {
+  makeMmsiPairHighlightExpr,
+  makeMmsiAnyEndpointExpr,
+  makeFleetOwnerMatchExpr,
+  makeFleetMemberMatchExpr,
+} from '../lib/mlExpressions';
+import { kickRepaint, onMapStyleReady } from '../lib/mapCore';
+import { circleRingLngLat } from '../lib/geometry';
+import { dashifyLine } from '../lib/dashifyLine';
+
+export function useGlobeOverlays(
+  mapRef: MutableRefObject<maplibregl.Map | null>,
+  projectionBusyRef: MutableRefObject<boolean>,
+  reorderGlobeFeatureLayers: () => void,
+  opts: {
+    overlays: MapToggleState;
+    pairLinks: PairLink[] | undefined;
+    fcLinks: FcLink[] | undefined;
+    fleetCircles: FleetCircle[] | undefined;
+    projection: MapProjectionId;
+    mapSyncEpoch: number;
+    hoveredFleetMmsiList: number[];
+    hoveredFleetOwnerKeyList: string[];
+    hoveredPairMmsiList: number[];
+  },
+) {
+  const {
+    overlays, pairLinks, fcLinks, fleetCircles, projection, mapSyncEpoch,
+    hoveredFleetMmsiList, hoveredFleetOwnerKeyList, hoveredPairMmsiList,
+  } = opts;
+
+  // Pair lines
+  useEffect(() => {
+    const map = mapRef.current;
+    if (!map) return;
+
+    const srcId = 'pair-lines-ml-src';
+    const layerId = 'pair-lines-ml';
+
+    const remove = () => {
+      try {
+        if (map.getLayer(layerId)) map.setLayoutProperty(layerId, 'visibility', 'none');
+      } catch {
+        // ignore
+      }
+    };
+
+    const ensure = () => {
+      if (projectionBusyRef.current) return;
+      if (!map.isStyleLoaded()) return;
+      if (projection !== 'globe' || !overlays.pairLines || (pairLinks?.length ?? 0) === 0) {
+        remove();
+        return;
+      }
+
+      const fc: GeoJSON.FeatureCollection<GeoJSON.LineString> = {
+        type: 'FeatureCollection',
+        features: (pairLinks || []).map((p) => ({
+          type: 'Feature',
+          id: makePairLinkFeatureId(p.aMmsi, p.bMmsi),
+          geometry: { type: 'LineString', coordinates: [p.from, p.to] },
+            properties: {
+              type: 'pair',
+              aMmsi: p.aMmsi,
+              bMmsi: p.bMmsi,
+              distanceNm: p.distanceNm,
+              warn: p.warn,
+            },
+        })),
+      };
+
+      try {
+        const existing = map.getSource(srcId) as GeoJSONSource | undefined;
+        if (existing) existing.setData(fc);
+        else map.addSource(srcId, { type: 'geojson', data: fc } as GeoJSONSourceSpecification);
+      } catch (e) {
+        console.warn('Pair lines source setup failed:', e);
+        return;
+      }
+
+      if (!map.getLayer(layerId)) {
+        try {
+          map.addLayer(
+            {
+              id: layerId,
+              type: 'line',
+              source: srcId,
+              layout: { 'line-cap': 'round', 'line-join': 'round', visibility: 'visible' },
+              paint: {
+                'line-color': [
+                  'case',
+                  ['==', ['get', 'highlighted'], 1],
+                  ['case', ['boolean', ['get', 'warn'], false], PAIR_LINE_WARN_ML_HL, PAIR_LINE_NORMAL_ML_HL],
+                  ['boolean', ['get', 'warn'], false],
+                  PAIR_LINE_WARN_ML,
+                  PAIR_LINE_NORMAL_ML,
+                ] as never,
+                'line-width': [
+                  'case',
+                  ['==', ['get', 'highlighted'], 1], 2.8,
+                  ['boolean', ['get', 'warn'], false], 2.2,
+                  1.4,
+                ] as never,
+                'line-opacity': 0.9,
+              },
+        } as unknown as LayerSpecification,
+            undefined,
+          );
+        } catch (e) {
+          console.warn('Pair lines layer add failed:', e);
+        }
+      } else {
+        try {
+          map.setLayoutProperty(layerId, 'visibility', 'visible');
+        } catch {
+          // ignore
+        }
+      }
+
+      reorderGlobeFeatureLayers();
+      kickRepaint(map);
+    };
+
+    const stop = onMapStyleReady(map, ensure);
+    ensure();
+    return () => {
+      stop();
+    };
+  }, [projection, overlays.pairLines, pairLinks, mapSyncEpoch, reorderGlobeFeatureLayers]);
+
+  // FC lines
+  useEffect(() => {
+    const map = mapRef.current;
+    if (!map) return;
+
+    const srcId = 'fc-lines-ml-src';
+    const layerId = 'fc-lines-ml';
+
+    const remove = () => {
+      try {
+        if (map.getLayer(layerId)) map.setLayoutProperty(layerId, 'visibility', 'none');
+      } catch {
+        // ignore
+      }
+    };
+
+    const ensure = () => {
+      if (projectionBusyRef.current) return;
+      if (!map.isStyleLoaded()) return;
+      if (projection !== 'globe' || !overlays.fcLines) {
+        remove();
+        return;
+      }
+
+      const segs: DashSeg[] = [];
+      for (const l of fcLinks || []) {
+        segs.push(...dashifyLine(l.from, l.to, l.suspicious, l.distanceNm, l.fcMmsi, l.otherMmsi));
+      }
+      if (segs.length === 0) {
+        remove();
+        return;
+      }
+
+      const fc: GeoJSON.FeatureCollection<GeoJSON.LineString> = {
+        type: 'FeatureCollection',
+        features: segs.map((s, idx) => ({
+          type: 'Feature',
+          id: makeFcSegmentFeatureId(s.fromMmsi ?? -1, s.toMmsi ?? -1, idx),
+          geometry: { type: 'LineString', coordinates: [s.from, s.to] },
+            properties: {
+              type: 'fc',
+              suspicious: s.suspicious,
+              distanceNm: s.distanceNm,
+              fcMmsi: s.fromMmsi ?? -1,
+              otherMmsi: s.toMmsi ?? -1,
+            },
+        })),
+      };
+
+      try {
+        const existing = map.getSource(srcId) as GeoJSONSource | undefined;
+        if (existing) existing.setData(fc);
+        else map.addSource(srcId, { type: 'geojson', data: fc } as GeoJSONSourceSpecification);
+      } catch (e) {
+        console.warn('FC lines source setup failed:', e);
+        return;
+      }
+
+      if (!map.getLayer(layerId)) {
+        try {
+          map.addLayer(
+            {
+              id: layerId,
+              type: 'line',
+              source: srcId,
+              layout: { 'line-cap': 'round', 'line-join': 'round', visibility: 'visible' },
+              paint: {
+                'line-color': [
+                  'case',
+                  ['==', ['get', 'highlighted'], 1],
+                  ['case', ['boolean', ['get', 'suspicious'], false], FC_LINE_SUSPICIOUS_ML_HL, FC_LINE_NORMAL_ML_HL],
+                  ['boolean', ['get', 'suspicious'], false],
+                  FC_LINE_SUSPICIOUS_ML,
+                  FC_LINE_NORMAL_ML,
+                ] as never,
+                'line-width': ['case', ['==', ['get', 'highlighted'], 1], 2.0, 1.3] as never,
+                'line-opacity': 0.9,
+              },
+        } as unknown as LayerSpecification,
+            undefined,
+          );
+        } catch (e) {
+          console.warn('FC lines layer add failed:', e);
+        }
+      } else {
+        try {
+          map.setLayoutProperty(layerId, 'visibility', 'visible');
+        } catch {
+          // ignore
+        }
+      }
+
+      reorderGlobeFeatureLayers();
+      kickRepaint(map);
+    };
+
+    const stop = onMapStyleReady(map, ensure);
+    ensure();
+    return () => {
+      stop();
+    };
+  }, [projection, overlays.fcLines, fcLinks, mapSyncEpoch, reorderGlobeFeatureLayers]);
+
+  // Fleet circles
+  useEffect(() => {
+    const map = mapRef.current;
+    if (!map) return;
+
+    const srcId = 'fleet-circles-ml-src';
+    const fillSrcId = 'fleet-circles-ml-fill-src';
+    const layerId = 'fleet-circles-ml';
+    const fillLayerId = 'fleet-circles-ml-fill';
+
+    const remove = () => {
+      try {
+        if (map.getLayer(fillLayerId)) map.setLayoutProperty(fillLayerId, 'visibility', 'none');
+      } catch {
+        // ignore
+      }
+      try {
+        if (map.getLayer(layerId)) map.setLayoutProperty(layerId, 'visibility', 'none');
+      } catch {
+        // ignore
+      }
+    };
+
+    const ensure = () => {
+      if (projectionBusyRef.current) return;
+      if (!map.isStyleLoaded()) return;
+      if (projection !== 'globe' || !overlays.fleetCircles || (fleetCircles?.length ?? 0) === 0) {
+        remove();
+        return;
+      }
+
+      const fcLine: GeoJSON.FeatureCollection<GeoJSON.LineString> = {
+        type: 'FeatureCollection',
+        features: (fleetCircles || []).map((c) => {
+          const ring = circleRingLngLat(c.center, c.radiusNm * 1852);
+          return {
+            type: 'Feature',
+            id: makeFleetCircleFeatureId(c.ownerKey),
+            geometry: { type: 'LineString', coordinates: ring },
+            properties: {
+              type: 'fleet',
+              ownerKey: c.ownerKey,
+              ownerLabel: c.ownerLabel,
+              count: c.count,
+              vesselMmsis: c.vesselMmsis,
+              highlighted: 0,
+            },
+          };
+        }),
+      };
+
+      const fcFill: GeoJSON.FeatureCollection<GeoJSON.Polygon> = {
+        type: 'FeatureCollection',
+        features: (fleetCircles || []).map((c) => {
+          const ring = circleRingLngLat(c.center, c.radiusNm * 1852);
+          return {
+            type: 'Feature',
+            id: `${makeFleetCircleFeatureId(c.ownerKey)}-fill`,
+            geometry: { type: 'Polygon', coordinates: [ring] },
+            properties: {
+              type: 'fleet-fill',
+              ownerKey: c.ownerKey,
+              ownerLabel: c.ownerLabel,
+              count: c.count,
+              vesselMmsis: c.vesselMmsis,
+              highlighted: 0,
+            },
+          };
+        }),
+      };
+
+      try {
+        const existing = map.getSource(srcId) as GeoJSONSource | undefined;
+        if (existing) existing.setData(fcLine);
+        else map.addSource(srcId, { type: 'geojson', data: fcLine } as GeoJSONSourceSpecification);
+      } catch (e) {
+        console.warn('Fleet circles source setup failed:', e);
+        return;
+      }
+
+      try {
+        const existingFill = map.getSource(fillSrcId) as GeoJSONSource | undefined;
+        if (existingFill) existingFill.setData(fcFill);
+        else map.addSource(fillSrcId, { type: 'geojson', data: fcFill } as GeoJSONSourceSpecification);
+      } catch (e) {
+        console.warn('Fleet circles source setup failed:', e);
+        return;
+      }
+
+      if (!map.getLayer(fillLayerId)) {
+        try {
+          map.addLayer(
+            {
+              id: fillLayerId,
+              type: 'fill',
+              source: fillSrcId,
+              layout: { visibility: 'visible' },
+              paint: {
+                'fill-color': ['case', ['==', ['get', 'highlighted'], 1], FLEET_FILL_ML_HL, FLEET_FILL_ML] as never,
+                'fill-opacity': ['case', ['==', ['get', 'highlighted'], 1], 0.7, 0.36] as never,
+              },
+            } as unknown as LayerSpecification,
+            undefined,
+          );
+        } catch (e) {
+          console.warn('Fleet circles fill layer add failed:', e);
+        }
+      } else {
+        try {
+          map.setLayoutProperty(fillLayerId, 'visibility', 'visible');
+        } catch {
+          // ignore
+        }
+      }
+
+      if (!map.getLayer(layerId)) {
+        try {
+          map.addLayer(
+            {
+              id: layerId,
+              type: 'line',
+              source: srcId,
+              layout: { 'line-cap': 'round', 'line-join': 'round', visibility: 'visible' },
+              paint: {
+                'line-color': ['case', ['==', ['get', 'highlighted'], 1], FLEET_LINE_ML_HL, FLEET_LINE_ML] as never,
+                'line-width': ['case', ['==', ['get', 'highlighted'], 1], 2, 1.1] as never,
+                'line-opacity': 0.85,
+              },
+            } as unknown as LayerSpecification,
+            undefined,
+          );
+        } catch (e) {
+          console.warn('Fleet circles layer add failed:', e);
+        }
+      } else {
+        try {
+          map.setLayoutProperty(layerId, 'visibility', 'visible');
+        } catch {
+          // ignore
+        }
+      }
+
+      reorderGlobeFeatureLayers();
+      kickRepaint(map);
+    };
+
+    const stop = onMapStyleReady(map, ensure);
+    ensure();
+    return () => {
+      stop();
+    };
+  }, [projection, overlays.fleetCircles, fleetCircles, mapSyncEpoch, reorderGlobeFeatureLayers]);
+
+  // Pair range
+  useEffect(() => {
+    const map = mapRef.current;
+    if (!map) return;
+
+    const srcId = 'pair-range-ml-src';
+    const layerId = 'pair-range-ml';
+
+    const remove = () => {
+      try {
+        if (map.getLayer(layerId)) map.setLayoutProperty(layerId, 'visibility', 'none');
+      } catch {
+        // ignore
+      }
+    };
+
+    const ensure = () => {
+      if (projectionBusyRef.current) return;
+      if (!map.isStyleLoaded()) return;
+      if (projection !== 'globe' || !overlays.pairRange) {
+        remove();
+        return;
+      }
+
+      const ranges: PairRangeCircle[] = [];
+      for (const p of pairLinks || []) {
+        const center: [number, number] = [(p.from[0] + p.to[0]) / 2, (p.from[1] + p.to[1]) / 2];
+        ranges.push({
+          center,
+          radiusNm: Math.max(0.05, p.distanceNm / 2),
+          warn: p.warn,
+          aMmsi: p.aMmsi,
+          bMmsi: p.bMmsi,
+          distanceNm: p.distanceNm,
+        });
+      }
+      if (ranges.length === 0) {
+        remove();
+        return;
+      }
+
+      const fc: GeoJSON.FeatureCollection<GeoJSON.LineString> = {
+        type: 'FeatureCollection',
+        features: ranges.map((c) => {
+          const ring = circleRingLngLat(c.center, c.radiusNm * 1852);
+          return {
+            type: 'Feature',
+            id: makePairLinkFeatureId(c.aMmsi, c.bMmsi),
+            geometry: { type: 'LineString', coordinates: ring },
+            properties: {
+              type: 'pair-range',
+              warn: c.warn,
+              aMmsi: c.aMmsi,
+              bMmsi: c.bMmsi,
+              distanceNm: c.distanceNm,
+              highlighted: 0,
+            },
+          };
+        }),
+      };
+
+      try {
+        const existing = map.getSource(srcId) as GeoJSONSource | undefined;
+        if (existing) existing.setData(fc);
+        else map.addSource(srcId, { type: 'geojson', data: fc } as GeoJSONSourceSpecification);
+      } catch (e) {
+        console.warn('Pair range source setup failed:', e);
+        return;
+      }
+
+      if (!map.getLayer(layerId)) {
+        try {
+          map.addLayer(
+            {
+              id: layerId,
+              type: 'line',
+              source: srcId,
+              layout: { 'line-cap': 'round', 'line-join': 'round', visibility: 'visible' },
+              paint: {
+                'line-color': [
+                  'case',
+                  ['==', ['get', 'highlighted'], 1],
+                  ['case', ['boolean', ['get', 'warn'], false], PAIR_RANGE_WARN_ML_HL, PAIR_RANGE_NORMAL_ML_HL],
+                  ['boolean', ['get', 'warn'], false],
+                  PAIR_RANGE_WARN_ML,
+                  PAIR_RANGE_NORMAL_ML,
+                ] as never,
+                'line-width': ['case', ['==', ['get', 'highlighted'], 1], 1.6, 1.0] as never,
+                'line-opacity': 0.85,
+              },
+            } as unknown as LayerSpecification,
+            undefined,
+          );
+        } catch (e) {
+          console.warn('Pair range layer add failed:', e);
+        }
+      } else {
+        try {
+          map.setLayoutProperty(layerId, 'visibility', 'visible');
+        } catch {
+          // ignore
+        }
+      }
+
+      kickRepaint(map);
+    };
+
+    const stop = onMapStyleReady(map, ensure);
+    ensure();
+    return () => {
+      stop();
+    };
+  }, [projection, overlays.pairRange, pairLinks, mapSyncEpoch, reorderGlobeFeatureLayers]);
+
+  // Paint state updates for hover highlights
+  // eslint-disable-next-line react-hooks/preserve-manual-memoization
+  const updateGlobeOverlayPaintStates = useCallback(() => {
+    if (projection !== 'globe' || projectionBusyRef.current) return;
+
+    const map = mapRef.current;
+    if (!map || !map.isStyleLoaded()) return;
+
+    const fleetAwarePairMmsiList = makeUniqueSorted([...hoveredPairMmsiList, ...hoveredFleetMmsiList]);
+
+    const pairHighlightExpr = hoveredPairMmsiList.length >= 2
+      ? makeMmsiPairHighlightExpr('aMmsi', 'bMmsi', hoveredPairMmsiList)
+      : false;
+
+    const fcEndpointHighlightExpr = fleetAwarePairMmsiList.length > 0
+      ? makeMmsiAnyEndpointExpr('fcMmsi', 'otherMmsi', fleetAwarePairMmsiList)
+      : false;
+
+    const fleetOwnerMatchExpr =
+      hoveredFleetOwnerKeyList.length > 0 ? makeFleetOwnerMatchExpr(hoveredFleetOwnerKeyList) : false;
+    const fleetMemberExpr =
+      hoveredFleetMmsiList.length > 0 ? makeFleetMemberMatchExpr(hoveredFleetMmsiList) : false;
+    const fleetHighlightExpr =
+      hoveredFleetOwnerKeyList.length > 0 || hoveredFleetMmsiList.length > 0
+        ? (['any', fleetOwnerMatchExpr, fleetMemberExpr] as never)
+        : false;
+
+    try {
+      if (map.getLayer('pair-lines-ml')) {
+        map.setPaintProperty(
+          'pair-lines-ml', 'line-color',
+          ['case', pairHighlightExpr, ['case', ['boolean', ['get', 'warn'], false], PAIR_LINE_WARN_ML_HL, PAIR_LINE_NORMAL_ML_HL], ['boolean', ['get', 'warn'], false], PAIR_LINE_WARN_ML, PAIR_LINE_NORMAL_ML] as never,
+        );
+        map.setPaintProperty(
+          'pair-lines-ml', 'line-width',
+          ['case', pairHighlightExpr, 2.8, ['boolean', ['get', 'warn'], false], 2.2, 1.4] as never,
+        );
+      }
+    } catch {
+      // ignore
+    }
+
+    try {
+      if (map.getLayer('fc-lines-ml')) {
+        map.setPaintProperty(
+          'fc-lines-ml', 'line-color',
+          ['case', fcEndpointHighlightExpr, ['case', ['boolean', ['get', 'suspicious'], false], FC_LINE_SUSPICIOUS_ML_HL, FC_LINE_NORMAL_ML_HL], ['boolean', ['get', 'suspicious'], false], FC_LINE_SUSPICIOUS_ML, FC_LINE_NORMAL_ML] as never,
+        );
+        map.setPaintProperty(
+          'fc-lines-ml', 'line-width',
+          ['case', fcEndpointHighlightExpr, 2.0, 1.3] as never,
+        );
+      }
+    } catch {
+      // ignore
+    }
+
+    try {
+      if (map.getLayer('pair-range-ml')) {
+        map.setPaintProperty(
+          'pair-range-ml', 'line-color',
+          ['case', pairHighlightExpr, ['case', ['boolean', ['get', 'warn'], false], PAIR_RANGE_WARN_ML_HL, PAIR_RANGE_NORMAL_ML_HL], ['boolean', ['get', 'warn'], false], PAIR_RANGE_WARN_ML, PAIR_RANGE_NORMAL_ML] as never,
+        );
+        map.setPaintProperty(
+          'pair-range-ml', 'line-width',
+          ['case', pairHighlightExpr, 1.6, 1.0] as never,
+        );
+      }
+    } catch {
+      // ignore
+    }
+
+    try {
+      if (map.getLayer('fleet-circles-ml-fill')) {
+        map.setPaintProperty('fleet-circles-ml-fill', 'fill-color', ['case', fleetHighlightExpr, FLEET_FILL_ML_HL, FLEET_FILL_ML] as never);
+        map.setPaintProperty('fleet-circles-ml-fill', 'fill-opacity', ['case', fleetHighlightExpr, 0.7, 0.28] as never);
+      }
+      if (map.getLayer('fleet-circles-ml')) {
+        map.setPaintProperty('fleet-circles-ml', 'line-color', ['case', fleetHighlightExpr, FLEET_LINE_ML_HL, FLEET_LINE_ML] as never);
+        map.setPaintProperty('fleet-circles-ml', 'line-width', ['case', fleetHighlightExpr, 2, 1.1] as never);
+      }
+    } catch {
+      // ignore
+    }
+  }, [projection, hoveredFleetMmsiList, hoveredFleetOwnerKeyList, hoveredPairMmsiList]);
+
+  useEffect(() => {
+    const map = mapRef.current;
+    if (!map) return;
+    const stop = onMapStyleReady(map, updateGlobeOverlayPaintStates);
+    updateGlobeOverlayPaintStates();
+    return () => {
+      stop();
+    };
+  }, [mapSyncEpoch, hoveredFleetMmsiList, hoveredFleetOwnerKeyList, hoveredPairMmsiList, projection, updateGlobeOverlayPaintStates]);
+}

apps/web/src/widgets/map3d/hooks/useHoverState.ts

@@ -0,0 +1,66 @@
+import { useMemo, useState } from 'react';
+import { toNumberSet } from '../lib/setUtils';
+
+export interface HoverStateInput {
+  hoveredMmsiSet: number[];
+  hoveredFleetMmsiSet: number[];
+  hoveredPairMmsiSet: number[];
+  hoveredFleetOwnerKey: string | null;
+  highlightedMmsiSet: number[];
+}
+
+export function useHoverState(input: HoverStateInput) {
+  const {
+    hoveredMmsiSet,
+    hoveredFleetMmsiSet,
+    hoveredPairMmsiSet,
+    hoveredFleetOwnerKey,
+    highlightedMmsiSet,
+  } = input;
+
+  // Internal deck hover states
+  const [hoveredDeckMmsiSet, setHoveredDeckMmsiSet] = useState<number[]>([]);
+  const [hoveredDeckPairMmsiSet, setHoveredDeckPairMmsiSet] = useState<number[]>([]);
+  const [hoveredDeckFleetOwnerKey, setHoveredDeckFleetOwnerKey] = useState<string | null>(null);
+  const [hoveredDeckFleetMmsiSet, setHoveredDeckFleetMmsiSet] = useState<number[]>([]);
+  const [hoveredZoneId, setHoveredZoneId] = useState<string | null>(null);
+
+  // Derived sets
+  const hoveredMmsiSetRef = useMemo(() => toNumberSet(hoveredMmsiSet), [hoveredMmsiSet]);
+  const hoveredFleetMmsiSetRef = useMemo(() => toNumberSet(hoveredFleetMmsiSet), [hoveredFleetMmsiSet]);
+  const hoveredPairMmsiSetRef = useMemo(() => toNumberSet(hoveredPairMmsiSet), [hoveredPairMmsiSet]);
+  const externalHighlightedSetRef = useMemo(() => toNumberSet(highlightedMmsiSet), [highlightedMmsiSet]);
+  const hoveredDeckMmsiSetRef = useMemo(() => toNumberSet(hoveredDeckMmsiSet), [hoveredDeckMmsiSet]);
+  const hoveredDeckPairMmsiSetRef = useMemo(() => toNumberSet(hoveredDeckPairMmsiSet), [hoveredDeckPairMmsiSet]);
+  const hoveredDeckFleetMmsiSetRef = useMemo(() => toNumberSet(hoveredDeckFleetMmsiSet), [hoveredDeckFleetMmsiSet]);
+
+  const hoveredFleetOwnerKeys = useMemo(() => {
+    const keys = new Set<string>();
+    if (hoveredFleetOwnerKey) keys.add(hoveredFleetOwnerKey);
+    if (hoveredDeckFleetOwnerKey) keys.add(hoveredDeckFleetOwnerKey);
+    return keys;
+  }, [hoveredFleetOwnerKey, hoveredDeckFleetOwnerKey]);
+
+  return {
+    // Internal states + setters
+    hoveredDeckMmsiSet,
+    setHoveredDeckMmsiSet,
+    hoveredDeckPairMmsiSet,
+    setHoveredDeckPairMmsiSet,
+    hoveredDeckFleetOwnerKey,
+    setHoveredDeckFleetOwnerKey,
+    hoveredDeckFleetMmsiSet,
+    setHoveredDeckFleetMmsiSet,
+    hoveredZoneId,
+    setHoveredZoneId,
+    // Derived sets
+    hoveredMmsiSetRef,
+    hoveredFleetMmsiSetRef,
+    hoveredPairMmsiSetRef,
+    externalHighlightedSetRef,
+    hoveredDeckMmsiSetRef,
+    hoveredDeckPairMmsiSetRef,
+    hoveredDeckFleetMmsiSetRef,
+    hoveredFleetOwnerKeys,
+  };
+}

apps/web/src/widgets/map3d/hooks/useMapInit.ts

@@ -0,0 +1,196 @@
+import { useCallback, useEffect, useRef, type MutableRefObject, type Dispatch, type SetStateAction } from 'react';
+import maplibregl, { type StyleSpecification } from 'maplibre-gl';
+import { MapboxOverlay } from '@deck.gl/mapbox';
+import { MaplibreDeckCustomLayer } from '../MaplibreDeckCustomLayer';
+import type { BaseMapId, MapProjectionId } from '../types';
+import { DECK_VIEW_ID } from '../constants';
+import { kickRepaint, onMapStyleReady } from '../lib/mapCore';
+import { ensureSeamarkOverlay } from '../layers/seamark';
+import { resolveMapStyle } from '../layers/bathymetry';
+import { clearGlobeNativeLayers } from '../lib/layerHelpers';
+
+export function useMapInit(
+  containerRef: MutableRefObject<HTMLDivElement | null>,
+  mapRef: MutableRefObject<maplibregl.Map | null>,
+  overlayRef: MutableRefObject<MapboxOverlay | null>,
+  overlayInteractionRef: MutableRefObject<MapboxOverlay | null>,
+  globeDeckLayerRef: MutableRefObject<MaplibreDeckCustomLayer | null>,
+  baseMapRef: MutableRefObject<BaseMapId>,
+  projectionRef: MutableRefObject<MapProjectionId>,
+  opts: {
+    baseMap: BaseMapId;
+    projection: MapProjectionId;
+    showSeamark: boolean;
+    onViewBboxChange?: (bbox: [number, number, number, number]) => void;
+    setMapSyncEpoch: Dispatch<SetStateAction<number>>;
+  },
+) {
+  const { onViewBboxChange, setMapSyncEpoch, showSeamark } = opts;
+  const showSeamarkRef = useRef(showSeamark);
+  useEffect(() => {
+    showSeamarkRef.current = showSeamark;
+  }, [showSeamark]);
+
+  const ensureMercatorOverlay = useCallback(() => {
+    const map = mapRef.current;
+    if (!map) return null;
+    if (overlayRef.current) return overlayRef.current;
+    try {
+      const next = new MapboxOverlay({ interleaved: true, layers: [] } as unknown as never);
+      map.addControl(next);
+      overlayRef.current = next;
+      return next;
+    } catch (e) {
+      console.warn('Deck overlay create failed:', e);
+      return null;
+    }
+  }, []);
+
+  const clearGlobeNativeLayersCb = useCallback(() => {
+    const map = mapRef.current;
+    if (!map) return;
+    clearGlobeNativeLayers(map);
+  }, []);
+
+  const pulseMapSync = useCallback(() => {
+    setMapSyncEpoch((prev) => prev + 1);
+    requestAnimationFrame(() => {
+      kickRepaint(mapRef.current);
+      setMapSyncEpoch((prev) => prev + 1);
+    });
+  }, [setMapSyncEpoch]);
+
+  useEffect(() => {
+    if (!containerRef.current || mapRef.current) return;
+
+    let map: maplibregl.Map | null = null;
+    let cancelled = false;
+    const controller = new AbortController();
+
+    (async () => {
+      let style: string | StyleSpecification = '/map/styles/osm-seamark.json';
+      try {
+        style = await resolveMapStyle(baseMapRef.current, controller.signal);
+      } catch (e) {
+        console.warn('Map style init failed, falling back to local raster style:', e);
+        style = '/map/styles/osm-seamark.json';
+      }
+      if (cancelled || !containerRef.current) return;
+
+      map = new maplibregl.Map({
+        container: containerRef.current,
+        style,
+        center: [126.5, 34.2],
+        zoom: 7,
+        pitch: 45,
+        bearing: 0,
+        maxPitch: 85,
+        dragRotate: true,
+        pitchWithRotate: true,
+        touchPitch: true,
+        scrollZoom: { around: 'center' },
+      });
+
+      map.addControl(new maplibregl.NavigationControl({ showZoom: true, showCompass: true }), 'top-left');
+      map.addControl(new maplibregl.ScaleControl({ maxWidth: 120, unit: 'metric' }), 'bottom-left');
+
+      mapRef.current = map;
+
+      if (projectionRef.current === 'mercator') {
+        const overlay = ensureMercatorOverlay();
+        if (!overlay) return;
+        overlayRef.current = overlay;
+      } else {
+        globeDeckLayerRef.current = new MaplibreDeckCustomLayer({
+          id: 'deck-globe',
+          viewId: DECK_VIEW_ID,
+          deckProps: { layers: [] },
+        });
+      }
+
+      function applyProjection() {
+        if (!map) return;
+        const next = projectionRef.current;
+        if (next === 'mercator') return;
+        try {
+          map.setProjection({ type: next });
+          map.setRenderWorldCopies(next !== 'globe');
+        } catch (e) {
+          console.warn('Projection apply failed:', e);
+        }
+      }
+
+      onMapStyleReady(map, () => {
+        applyProjection();
+        const deckLayer = globeDeckLayerRef.current;
+        if (projectionRef.current === 'globe' && deckLayer && !map!.getLayer(deckLayer.id)) {
+          try {
+            map!.addLayer(deckLayer);
+          } catch {
+            // ignore
+          }
+        }
+        if (!showSeamarkRef.current) return;
+        try {
+          ensureSeamarkOverlay(map!, 'bathymetry-lines');
+        } catch {
+          // ignore
+        }
+      });
+
+      const emitBbox = () => {
+        const cb = onViewBboxChange;
+        if (!cb || !map) return;
+        const b = map.getBounds();
+        cb([b.getWest(), b.getSouth(), b.getEast(), b.getNorth()]);
+      };
+      map.on('load', emitBbox);
+      map.on('moveend', emitBbox);
+
+      map.once('load', () => {
+        if (showSeamarkRef.current) {
+          try {
+            ensureSeamarkOverlay(map!, 'bathymetry-lines');
+          } catch {
+            // ignore
+          }
+          try {
+            const opacity = showSeamarkRef.current ? 0.85 : 0;
+            map!.setPaintProperty('seamark', 'raster-opacity', opacity);
+          } catch {
+            // ignore
+          }
+        }
+      });
+    })();
+
+    return () => {
+      cancelled = true;
+      controller.abort();
+
+      try {
+        globeDeckLayerRef.current?.requestFinalize();
+      } catch {
+        // ignore
+      }
+
+      if (map) {
+        map.remove();
+        map = null;
+      }
+      if (overlayRef.current) {
+        overlayRef.current.finalize();
+        overlayRef.current = null;
+      }
+      if (overlayInteractionRef.current) {
+        overlayInteractionRef.current.finalize();
+        overlayInteractionRef.current = null;
+      }
+      globeDeckLayerRef.current = null;
+      mapRef.current = null;
+    };
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, []);
+
+  return { ensureMercatorOverlay, clearGlobeNativeLayers: clearGlobeNativeLayersCb, pulseMapSync };
+}

apps/web/src/widgets/map3d/hooks/usePredictionVectors.ts

@@ -0,0 +1,210 @@
+import { useEffect, type MutableRefObject } from 'react';
+import type maplibregl from 'maplibre-gl';
+import type { GeoJSONSource, GeoJSONSourceSpecification, LayerSpecification } from 'maplibre-gl';
+import type { AisTarget } from '../../../entities/aisTarget/model/types';
+import type { LegacyVesselInfo } from '../../../entities/legacyVessel/model/types';
+import type { MapToggleState } from '../../../features/mapToggles/MapToggles';
+import type { Map3DSettings, MapProjectionId } from '../types';
+import { LEGACY_CODE_COLORS_RGB, OTHER_AIS_SPEED_RGB, rgba as rgbaCss } from '../../../shared/lib/map/palette';
+import { kickRepaint, onMapStyleReady } from '../lib/mapCore';
+import { destinationPointLngLat } from '../lib/geometry';
+import { isFiniteNumber } from '../lib/setUtils';
+import { toValidBearingDeg, lightenColor } from '../lib/shipUtils';
+
+export function usePredictionVectors(
+  mapRef: MutableRefObject<maplibregl.Map | null>,
+  projectionBusyRef: MutableRefObject<boolean>,
+  reorderGlobeFeatureLayers: () => void,
+  opts: {
+    overlays: MapToggleState;
+    settings: Map3DSettings;
+    shipData: AisTarget[];
+    legacyHits: Map<number, LegacyVesselInfo> | null | undefined;
+    selectedMmsi: number | null;
+    externalHighlightedSetRef: Set<number>;
+    projection: MapProjectionId;
+    baseMap: string;
+    mapSyncEpoch: number;
+  },
+) {
+  const { overlays, settings, shipData, legacyHits, selectedMmsi, externalHighlightedSetRef, projection, baseMap, mapSyncEpoch } = opts;
+
+  useEffect(() => {
+    const map = mapRef.current;
+    if (!map) return;
+
+    const srcId = 'predict-vectors-src';
+    const outlineId = 'predict-vectors-outline';
+    const lineId = 'predict-vectors';
+    const hlOutlineId = 'predict-vectors-hl-outline';
+    const hlId = 'predict-vectors-hl';
+
+    const ensure = () => {
+      if (projectionBusyRef.current) return;
+      if (!map.isStyleLoaded()) return;
+
+      const visibility = overlays.predictVectors ? 'visible' : 'none';
+
+      const horizonMinutes = 15;
+      const horizonSeconds = horizonMinutes * 60;
+      const metersPerSecondPerKnot = 0.514444;
+
+      const features: GeoJSON.Feature<GeoJSON.LineString>[] = [];
+      if (overlays.predictVectors && settings.showShips && shipData.length > 0) {
+        for (const t of shipData) {
+          const legacy = legacyHits?.get(t.mmsi) ?? null;
+          const isTarget = !!legacy;
+          const isSelected = selectedMmsi != null && t.mmsi === selectedMmsi;
+          const isPinnedHighlight = externalHighlightedSetRef.has(t.mmsi);
+          if (!isTarget && !isSelected && !isPinnedHighlight) continue;
+
+          const sog = isFiniteNumber(t.sog) ? t.sog : null;
+          const bearing = toValidBearingDeg(t.cog) ?? toValidBearingDeg(t.heading);
+          if (sog == null || bearing == null) continue;
+          if (sog < 0.2) continue;
+
+          const distM = sog * metersPerSecondPerKnot * horizonSeconds;
+          if (!Number.isFinite(distM) || distM <= 0) continue;
+
+          const to = destinationPointLngLat([t.lon, t.lat], bearing, distM);
+
+          const baseRgb = isTarget
+            ? LEGACY_CODE_COLORS_RGB[legacy?.shipCode ?? ''] ?? OTHER_AIS_SPEED_RGB.moving
+            : OTHER_AIS_SPEED_RGB.moving;
+          const rgb = lightenColor(baseRgb, isTarget ? 0.55 : 0.62);
+          const alpha = isTarget ? 0.72 : 0.52;
+          const alphaHl = isTarget ? 0.92 : 0.84;
+          const hl = isSelected || isPinnedHighlight ? 1 : 0;
+
+          features.push({
+            type: 'Feature',
+            id: `pred-${t.mmsi}`,
+            geometry: { type: 'LineString', coordinates: [[t.lon, t.lat], to] },
+            properties: {
+              mmsi: t.mmsi,
+              minutes: horizonMinutes,
+              sog,
+              cog: bearing,
+              target: isTarget ? 1 : 0,
+              hl,
+              color: rgbaCss(rgb, alpha),
+              colorHl: rgbaCss(rgb, alphaHl),
+            },
+          });
+        }
+      }
+
+      const fc: GeoJSON.FeatureCollection<GeoJSON.LineString> = { type: 'FeatureCollection', features };
+
+      try {
+        const existing = map.getSource(srcId) as GeoJSONSource | undefined;
+        if (existing) existing.setData(fc);
+        else map.addSource(srcId, { type: 'geojson', data: fc } as GeoJSONSourceSpecification);
+      } catch (e) {
+        console.warn('Prediction vector source setup failed:', e);
+        return;
+      }
+
+      const ensureLayer = (id: string, paint: LayerSpecification['paint'], filter: unknown[]) => {
+        if (!map.getLayer(id)) {
+          try {
+            map.addLayer(
+              {
+                id,
+                type: 'line',
+                source: srcId,
+                filter: filter as never,
+                layout: {
+                  visibility,
+                  'line-cap': 'round',
+                  'line-join': 'round',
+                },
+                paint,
+              } as unknown as LayerSpecification,
+              undefined,
+            );
+          } catch (e) {
+            console.warn('Prediction vector layer add failed:', e);
+          }
+        } else {
+          try {
+            map.setLayoutProperty(id, 'visibility', visibility);
+            map.setFilter(id, filter as never);
+            if (paint && typeof paint === 'object') {
+              for (const [key, value] of Object.entries(paint)) {
+                map.setPaintProperty(id, key as never, value as never);
+              }
+            }
+          } catch {
+            // ignore
+          }
+        }
+      };
+
+      const baseFilter = ['==', ['to-number', ['get', 'hl'], 0], 0] as unknown as unknown[];
+      const hlFilter = ['==', ['to-number', ['get', 'hl'], 0], 1] as unknown as unknown[];
+
+      ensureLayer(
+        outlineId,
+        {
+          'line-color': 'rgba(2,6,23,0.86)',
+          'line-width': 4.8,
+          'line-opacity': 1,
+          'line-blur': 0.2,
+          'line-dasharray': [1.2, 1.8] as never,
+        } as never,
+        baseFilter,
+      );
+      ensureLayer(
+        lineId,
+        {
+          'line-color': ['coalesce', ['get', 'color'], 'rgba(226,232,240,0.62)'] as never,
+          'line-width': 2.4,
+          'line-opacity': 1,
+          'line-dasharray': [1.2, 1.8] as never,
+        } as never,
+        baseFilter,
+      );
+      ensureLayer(
+        hlOutlineId,
+        {
+          'line-color': 'rgba(2,6,23,0.92)',
+          'line-width': 6.4,
+          'line-opacity': 1,
+          'line-blur': 0.25,
+          'line-dasharray': [1.2, 1.8] as never,
+        } as never,
+        hlFilter,
+      );
+      ensureLayer(
+        hlId,
+        {
+          'line-color': ['coalesce', ['get', 'colorHl'], ['get', 'color'], 'rgba(241,245,249,0.92)'] as never,
+          'line-width': 3.6,
+          'line-opacity': 1,
+          'line-dasharray': [1.2, 1.8] as never,
+        } as never,
+        hlFilter,
+      );
+
+      reorderGlobeFeatureLayers();
+      kickRepaint(map);
+    };
+
+    const stop = onMapStyleReady(map, ensure);
+    return () => {
+      stop();
+    };
+  }, [
+    overlays.predictVectors,
+    settings.showShips,
+    shipData,
+    legacyHits,
+    selectedMmsi,
+    externalHighlightedSetRef,
+    projection,
+    baseMap,
+    mapSyncEpoch,
+    reorderGlobeFeatureLayers,
+  ]);
+}

apps/web/src/widgets/map3d/hooks/useProjectionToggle.ts

@@ -0,0 +1,324 @@
+import { useCallback, useEffect, useRef, type MutableRefObject } from 'react';
+import type maplibregl from 'maplibre-gl';
+import { MapboxOverlay } from '@deck.gl/mapbox';
+import { MaplibreDeckCustomLayer } from '../MaplibreDeckCustomLayer';
+import type { MapProjectionId } from '../types';
+import { DECK_VIEW_ID } from '../constants';
+import { kickRepaint, onMapStyleReady, extractProjectionType } from '../lib/mapCore';
+import { removeLayerIfExists } from '../lib/layerHelpers';
+
+export function useProjectionToggle(
+  mapRef: MutableRefObject<maplibregl.Map | null>,
+  overlayRef: MutableRefObject<MapboxOverlay | null>,
+  overlayInteractionRef: MutableRefObject<MapboxOverlay | null>,
+  globeDeckLayerRef: MutableRefObject<MaplibreDeckCustomLayer | null>,
+  projectionBusyRef: MutableRefObject<boolean>,
+  opts: {
+    projection: MapProjectionId;
+    clearGlobeNativeLayers: () => void;
+    ensureMercatorOverlay: () => MapboxOverlay | null;
+    onProjectionLoadingChange?: (loading: boolean) => void;
+    pulseMapSync: () => void;
+    setMapSyncEpoch: (updater: (prev: number) => number) => void;
+  },
+): () => void {
+  const { projection, clearGlobeNativeLayers, ensureMercatorOverlay, onProjectionLoadingChange, pulseMapSync, setMapSyncEpoch } = opts;
+
+  const projectionBusyTokenRef = useRef(0);
+  const projectionBusyTimerRef = useRef<ReturnType<typeof window.setTimeout> | null>(null);
+  const projectionPrevRef = useRef<MapProjectionId>(projection);
+  const projectionRef = useRef<MapProjectionId>(projection);
+
+  useEffect(() => {
+    projectionRef.current = projection;
+  }, [projection]);
+
+  const clearProjectionBusyTimer = useCallback(() => {
+    if (projectionBusyTimerRef.current == null) return;
+    clearTimeout(projectionBusyTimerRef.current);
+    projectionBusyTimerRef.current = null;
+  }, []);
+
+  // eslint-disable-next-line react-hooks/preserve-manual-memoization
+  const endProjectionLoading = useCallback(() => {
+    if (!projectionBusyRef.current) return;
+    projectionBusyRef.current = false;
+    clearProjectionBusyTimer();
+    if (onProjectionLoadingChange) {
+      onProjectionLoadingChange(false);
+    }
+    setMapSyncEpoch((prev) => prev + 1);
+    kickRepaint(mapRef.current);
+  }, [clearProjectionBusyTimer, onProjectionLoadingChange, setMapSyncEpoch]);
+
+  const setProjectionLoading = useCallback(
+    // eslint-disable-next-line react-hooks/preserve-manual-memoization
+    (loading: boolean) => {
+      if (projectionBusyRef.current === loading) return;
+      if (!loading) {
+        endProjectionLoading();
+        return;
+      }
+
+      clearProjectionBusyTimer();
+      projectionBusyRef.current = true;
+      const token = ++projectionBusyTokenRef.current;
+      if (onProjectionLoadingChange) {
+        onProjectionLoadingChange(true);
+      }
+
+      projectionBusyTimerRef.current = setTimeout(() => {
+        if (!projectionBusyRef.current || projectionBusyTokenRef.current !== token) return;
+        console.debug('Projection loading fallback timeout reached.');
+        endProjectionLoading();
+      }, 4000);
+    },
+    [clearProjectionBusyTimer, endProjectionLoading, onProjectionLoadingChange],
+  );
+
+  useEffect(() => {
+    return () => {
+      clearProjectionBusyTimer();
+      endProjectionLoading();
+    };
+  }, [clearProjectionBusyTimer, endProjectionLoading]);
+
+  // eslint-disable-next-line react-hooks/preserve-manual-memoization
+  const reorderGlobeFeatureLayers = useCallback(() => {
+    const map = mapRef.current;
+    if (!map || projectionRef.current !== 'globe') return;
+    if (projectionBusyRef.current) return;
+    if (!map.isStyleLoaded()) return;
+
+    const ordering = [
+      'zones-fill',
+      'zones-line',
+      'zones-label',
+      'predict-vectors-outline',
+      'predict-vectors',
+      'predict-vectors-hl-outline',
+      'predict-vectors-hl',
+      'ships-globe-halo',
+      'ships-globe-outline',
+      'ships-globe',
+      'ships-globe-label',
+      'ships-globe-hover-halo',
+      'ships-globe-hover-outline',
+      'ships-globe-hover',
+      'pair-lines-ml',
+      'fc-lines-ml',
+      'pair-range-ml',
+      'fleet-circles-ml-fill',
+      'fleet-circles-ml',
+    ];
+
+    for (const layerId of ordering) {
+      try {
+        if (map.getLayer(layerId)) map.moveLayer(layerId);
+      } catch {
+        // ignore
+      }
+    }
+
+    kickRepaint(map);
+  }, []);
+
+  // Projection toggle (mercator <-> globe)
+  useEffect(() => {
+    const map = mapRef.current;
+    if (!map) return;
+    let cancelled = false;
+    let retries = 0;
+    const maxRetries = 18;
+    const isTransition = projectionPrevRef.current !== projection;
+    projectionPrevRef.current = projection;
+    let settleScheduled = false;
+    let settleCleanup: (() => void) | null = null;
+
+    const startProjectionSettle = () => {
+      if (!isTransition || settleScheduled) return;
+      settleScheduled = true;
+
+      const finalize = () => {
+        if (!cancelled && isTransition) setProjectionLoading(false);
+      };
+
+      const finalizeSoon = () => {
+        if (cancelled || !isTransition || projectionBusyRef.current === false) return;
+        if (!map.isStyleLoaded()) {
+          requestAnimationFrame(finalizeSoon);
+          return;
+        }
+        requestAnimationFrame(finalize);
+      };
+
+      const onIdle = () => finalizeSoon();
+      try {
+        map.on('idle', onIdle);
+        const styleReadyCleanup = onMapStyleReady(map, finalizeSoon);
+        settleCleanup = () => {
+          map.off('idle', onIdle);
+          styleReadyCleanup();
+        };
+      } catch {
+        requestAnimationFrame(finalize);
+        settleCleanup = null;
+      }
+
+      finalizeSoon();
+    };
+
+    if (isTransition) setProjectionLoading(true);
+
+    const disposeMercatorOverlays = () => {
+      const disposeOne = (target: MapboxOverlay | null, toNull: 'base' | 'interaction') => {
+        if (!target) return;
+        try {
+          target.setProps({ layers: [] } as never);
+        } catch {
+          // ignore
+        }
+        try {
+          map.removeControl(target as never);
+        } catch {
+          // ignore
+        }
+        try {
+          target.finalize();
+        } catch {
+          // ignore
+        }
+        if (toNull === 'base') {
+          overlayRef.current = null;
+        } else {
+          overlayInteractionRef.current = null;
+        }
+      };
+
+      disposeOne(overlayRef.current, 'base');
+      disposeOne(overlayInteractionRef.current, 'interaction');
+    };
+
+    const disposeGlobeDeckLayer = () => {
+      const current = globeDeckLayerRef.current;
+      if (!current) return;
+      removeLayerIfExists(map, current.id);
+      try {
+        current.requestFinalize();
+      } catch {
+        // ignore
+      }
+      globeDeckLayerRef.current = null;
+    };
+
+    const syncProjectionAndDeck = () => {
+      if (cancelled) return;
+      if (!isTransition) {
+        return;
+      }
+
+      if (!map.isStyleLoaded()) {
+        if (!cancelled && retries < maxRetries) {
+          retries += 1;
+          window.requestAnimationFrame(() => syncProjectionAndDeck());
+        }
+        return;
+      }
+
+      const next = projection;
+      const currentProjection = extractProjectionType(map);
+      const shouldSwitchProjection = currentProjection !== next;
+
+      if (projection === 'globe') {
+        disposeMercatorOverlays();
+        clearGlobeNativeLayers();
+      } else {
+        disposeGlobeDeckLayer();
+        clearGlobeNativeLayers();
+      }
+
+      try {
+        if (shouldSwitchProjection) {
+          map.setProjection({ type: next });
+        }
+        map.setRenderWorldCopies(next !== 'globe');
+        if (shouldSwitchProjection && currentProjection !== next && !cancelled && retries < maxRetries) {
+          retries += 1;
+          window.requestAnimationFrame(() => syncProjectionAndDeck());
+          return;
+        }
+      } catch (e) {
+        if (!cancelled && retries < maxRetries) {
+          retries += 1;
+          window.requestAnimationFrame(() => syncProjectionAndDeck());
+          return;
+        }
+        if (isTransition) setProjectionLoading(false);
+        console.warn('Projection switch failed:', e);
+      }
+
+      if (projection === 'globe') {
+        disposeGlobeDeckLayer();
+
+        if (!globeDeckLayerRef.current) {
+          globeDeckLayerRef.current = new MaplibreDeckCustomLayer({
+            id: 'deck-globe',
+            viewId: DECK_VIEW_ID,
+            deckProps: { layers: [] },
+          });
+        }
+
+        const layer = globeDeckLayerRef.current;
+        const layerId = layer?.id;
+        if (layer && layerId && map.isStyleLoaded() && !map.getLayer(layerId)) {
+          try {
+            map.addLayer(layer);
+          } catch {
+            // ignore
+          }
+          if (!map.getLayer(layerId) && !cancelled && retries < maxRetries) {
+            retries += 1;
+            window.requestAnimationFrame(() => syncProjectionAndDeck());
+            return;
+          }
+        }
+      } else {
+        disposeGlobeDeckLayer();
+        ensureMercatorOverlay();
+      }
+
+      reorderGlobeFeatureLayers();
+      kickRepaint(map);
+      try {
+        map.resize();
+      } catch {
+        // ignore
+      }
+      if (isTransition) {
+        startProjectionSettle();
+      }
+      pulseMapSync();
+    };
+
+    if (!isTransition) return;
+
+    if (map.isStyleLoaded()) syncProjectionAndDeck();
+    else {
+      const stop = onMapStyleReady(map, syncProjectionAndDeck);
+      return () => {
+        cancelled = true;
+        if (settleCleanup) settleCleanup();
+        stop();
+        if (isTransition) setProjectionLoading(false);
+      };
+    }
+
+    return () => {
+      cancelled = true;
+      if (settleCleanup) settleCleanup();
+      if (isTransition) setProjectionLoading(false);
+    };
+  }, [projection, clearGlobeNativeLayers, ensureMercatorOverlay, reorderGlobeFeatureLayers, setProjectionLoading]);
+
+  return reorderGlobeFeatureLayers;
+}

apps/web/src/widgets/map3d/hooks/useSubcablesLayer.ts

@@ -0,0 +1,229 @@
+import { useEffect, useRef, type MutableRefObject } from 'react';
+import maplibregl, { type LayerSpecification } from 'maplibre-gl';
+import type { SubcableGeoJson } from '../../../entities/subcable/model/types';
+import type { MapToggleState } from '../../../features/mapToggles/MapToggles';
+import type { MapProjectionId } from '../types';
+import { ensureGeoJsonSource, ensureLayer, setLayerVisibility, cleanupLayers } from '../lib/layerHelpers';
+import { kickRepaint, onMapStyleReady } from '../lib/mapCore';
+
+const SRC_ID = 'subcables-src';
+const LINE_ID = 'subcables-line';
+const LINE_HOVER_ID = 'subcables-line-hover';
+const LABEL_ID = 'subcables-label';
+
+export function useSubcablesLayer(
+  mapRef: MutableRefObject<maplibregl.Map | null>,
+  projectionBusyRef: MutableRefObject<boolean>,
+  reorderGlobeFeatureLayers: () => void,
+  opts: {
+    subcableGeo: SubcableGeoJson | null;
+    overlays: MapToggleState;
+    projection: MapProjectionId;
+    mapSyncEpoch: number;
+    hoveredCableId: string | null;
+    onHoverCable: (cableId: string | null) => void;
+    onClickCable: (cableId: string | null) => void;
+  },
+) {
+  const { subcableGeo, overlays, projection, mapSyncEpoch, hoveredCableId, onHoverCable, onClickCable } = opts;
+
+  const onHoverRef = useRef(onHoverCable);
+  const onClickRef = useRef(onClickCable);
+  onHoverRef.current = onHoverCable;
+  onClickRef.current = onClickCable;
+
+  useEffect(() => {
+    const map = mapRef.current;
+    if (!map) return;
+
+    const ensure = () => {
+      if (projectionBusyRef.current) return;
+
+      const visibility = overlays.subcables ? 'visible' : 'none';
+      setLayerVisibility(map, LINE_ID, overlays.subcables);
+      setLayerVisibility(map, LINE_HOVER_ID, overlays.subcables);
+      setLayerVisibility(map, LABEL_ID, overlays.subcables);
+
+      if (!subcableGeo) return;
+      if (!map.isStyleLoaded()) return;
+
+      try {
+        ensureGeoJsonSource(map, SRC_ID, subcableGeo);
+
+        const before = map.getLayer('zones-fill')
+          ? 'zones-fill'
+          : map.getLayer('deck-globe')
+            ? 'deck-globe'
+            : undefined;
+
+        ensureLayer(
+          map,
+          {
+            id: LINE_ID,
+            type: 'line',
+            source: SRC_ID,
+            paint: {
+              'line-color': ['get', 'color'],
+              'line-opacity': ['interpolate', ['linear'], ['zoom'], 2, 0.4, 6, 0.55, 10, 0.7],
+              'line-width': ['interpolate', ['linear'], ['zoom'], 2, 0.8, 6, 1.2, 10, 1.8],
+            },
+            layout: { visibility, 'line-cap': 'round', 'line-join': 'round' },
+          } as unknown as LayerSpecification,
+          { before },
+        );
+
+        ensureLayer(
+          map,
+          {
+            id: LINE_HOVER_ID,
+            type: 'line',
+            source: SRC_ID,
+            paint: {
+              'line-color': ['get', 'color'],
+              'line-opacity': 0,
+              'line-width': ['interpolate', ['linear'], ['zoom'], 2, 3, 6, 5, 10, 8],
+            },
+            filter: ['==', ['get', 'id'], ''],
+            layout: { visibility, 'line-cap': 'round', 'line-join': 'round' },
+          } as unknown as LayerSpecification,
+          { before },
+        );
+
+        ensureLayer(
+          map,
+          {
+            id: LABEL_ID,
+            type: 'symbol',
+            source: SRC_ID,
+            layout: {
+              visibility,
+              'symbol-placement': 'line',
+              'text-field': ['get', 'name'],
+              'text-size': ['interpolate', ['linear'], ['zoom'], 4, 9, 8, 11, 12, 13],
+              'text-font': ['Noto Sans Regular', 'Open Sans Regular'],
+              'text-allow-overlap': false,
+              'text-padding': 8,
+              'text-rotation-alignment': 'map',
+            },
+            paint: {
+              'text-color': 'rgba(210,225,240,0.78)',
+              'text-halo-color': 'rgba(2,6,23,0.85)',
+              'text-halo-width': 1.0,
+              'text-halo-blur': 0.6,
+              'text-opacity': ['interpolate', ['linear'], ['zoom'], 4, 0, 5, 0.7, 8, 0.85],
+            },
+            minzoom: 4,
+          } as unknown as LayerSpecification,
+        );
+
+        // Update hover highlight
+        if (hoveredCableId) {
+          if (map.getLayer(LINE_ID)) {
+            map.setPaintProperty(LINE_ID, 'line-opacity', [
+              'case',
+              ['==', ['get', 'id'], hoveredCableId],
+              0.95,
+              ['interpolate', ['linear'], ['zoom'], 2, 0.25, 6, 0.35, 10, 0.45],
+            ] as never);
+            map.setPaintProperty(LINE_ID, 'line-width', [
+              'case',
+              ['==', ['get', 'id'], hoveredCableId],
+              ['interpolate', ['linear'], ['zoom'], 2, 2.0, 6, 2.8, 10, 3.5],
+              ['interpolate', ['linear'], ['zoom'], 2, 0.6, 6, 0.9, 10, 1.4],
+            ] as never);
+          }
+          if (map.getLayer(LINE_HOVER_ID)) {
+            map.setFilter(LINE_HOVER_ID, ['==', ['get', 'id'], hoveredCableId] as never);
+            map.setPaintProperty(LINE_HOVER_ID, 'line-opacity', 0.25);
+          }
+        } else {
+          if (map.getLayer(LINE_ID)) {
+            map.setPaintProperty(
+              LINE_ID,
+              'line-opacity',
+              ['interpolate', ['linear'], ['zoom'], 2, 0.4, 6, 0.55, 10, 0.7] as never,
+            );
+            map.setPaintProperty(
+              LINE_ID,
+              'line-width',
+              ['interpolate', ['linear'], ['zoom'], 2, 0.8, 6, 1.2, 10, 1.8] as never,
+            );
+          }
+          if (map.getLayer(LINE_HOVER_ID)) {
+            map.setFilter(LINE_HOVER_ID, ['==', ['get', 'id'], ''] as never);
+            map.setPaintProperty(LINE_HOVER_ID, 'line-opacity', 0);
+          }
+        }
+      } catch (e) {
+        console.warn('Subcables layer setup failed:', e);
+      } finally {
+        reorderGlobeFeatureLayers();
+        kickRepaint(map);
+      }
+    };
+
+    const stop = onMapStyleReady(map, ensure);
+    return () => {
+      stop();
+    };
+  }, [subcableGeo, overlays.subcables, projection, mapSyncEpoch, hoveredCableId, reorderGlobeFeatureLayers]);
+
+  // Mouse events
+  useEffect(() => {
+    const map = mapRef.current;
+    if (!map) return;
+    if (!overlays.subcables) return;
+
+    const onMouseEnter = (e: maplibregl.MapMouseEvent & { features?: maplibregl.MapGeoJSONFeature[] }) => {
+      const cableId = e.features?.[0]?.properties?.id;
+      if (typeof cableId === 'string' && cableId) {
+        map.getCanvas().style.cursor = 'pointer';
+        onHoverRef.current(cableId);
+      }
+    };
+
+    const onMouseLeave = () => {
+      map.getCanvas().style.cursor = '';
+      onHoverRef.current(null);
+    };
+
+    const onClick = (e: maplibregl.MapMouseEvent & { features?: maplibregl.MapGeoJSONFeature[] }) => {
+      const cableId = e.features?.[0]?.properties?.id;
+      if (typeof cableId === 'string' && cableId) {
+        onClickRef.current(cableId);
+      }
+    };
+
+    const addEvents = () => {
+      if (!map.getLayer(LINE_ID)) return;
+      map.on('mouseenter', LINE_ID, onMouseEnter);
+      map.on('mouseleave', LINE_ID, onMouseLeave);
+      map.on('click', LINE_ID, onClick);
+    };
+
+    if (map.isStyleLoaded() && map.getLayer(LINE_ID)) {
+      addEvents();
+    } else {
+      map.once('idle', addEvents);
+    }
+
+    return () => {
+      try {
+        map.off('mouseenter', LINE_ID, onMouseEnter);
+        map.off('mouseleave', LINE_ID, onMouseLeave);
+        map.off('click', LINE_ID, onClick);
+      } catch {
+        // ignore
+      }
+    };
+  }, [overlays.subcables, mapSyncEpoch]);
+
+  // Cleanup on unmount
+  useEffect(() => {
+    const mapInstance = mapRef.current;
+    return () => {
+      if (!mapInstance) return;
+      cleanupLayers(mapInstance, [LABEL_ID, LINE_HOVER_ID, LINE_ID], [SRC_ID]);
+    };
+  }, []);
+}

apps/web/src/widgets/map3d/hooks/useZonesLayer.ts

@@ -0,0 +1,230 @@
+import { useEffect, type MutableRefObject } from 'react';
+import maplibregl, {
+  type GeoJSONSource,
+  type GeoJSONSourceSpecification,
+  type LayerSpecification,
+} from 'maplibre-gl';
+import type { ZoneId } from '../../../entities/zone/model/meta';
+import { ZONE_META } from '../../../entities/zone/model/meta';
+import type { ZonesGeoJson } from '../../../entities/zone/api/useZones';
+import type { MapToggleState } from '../../../features/mapToggles/MapToggles';
+import type { BaseMapId, MapProjectionId } from '../types';
+import { kickRepaint, onMapStyleReady } from '../lib/mapCore';
+
+export function useZonesLayer(
+  mapRef: MutableRefObject<maplibregl.Map | null>,
+  projectionBusyRef: MutableRefObject<boolean>,
+  reorderGlobeFeatureLayers: () => void,
+  opts: {
+    zones: ZonesGeoJson | null;
+    overlays: MapToggleState;
+    projection: MapProjectionId;
+    baseMap: BaseMapId;
+    hoveredZoneId: string | null;
+    mapSyncEpoch: number;
+  },
+) {
+  const { zones, overlays, projection, baseMap, hoveredZoneId, mapSyncEpoch } = opts;
+
+  useEffect(() => {
+    const map = mapRef.current;
+    if (!map) return;
+
+    const srcId = 'zones-src';
+    const fillId = 'zones-fill';
+    const lineId = 'zones-line';
+    const labelId = 'zones-label';
+
+    const zoneColorExpr: unknown[] = ['match', ['get', 'zoneId']];
+    for (const k of Object.keys(ZONE_META) as ZoneId[]) {
+      zoneColorExpr.push(k, ZONE_META[k].color);
+    }
+    zoneColorExpr.push('#3B82F6');
+    const zoneLabelExpr: unknown[] = ['match', ['to-string', ['coalesce', ['get', 'zoneId'], '']]];
+    for (const k of Object.keys(ZONE_META) as ZoneId[]) {
+      zoneLabelExpr.push(k, ZONE_META[k].name);
+    }
+    zoneLabelExpr.push(['coalesce', ['get', 'zoneName'], ['get', 'zoneLabel'], ['get', 'NAME'], '수역']);
+
+    const ensure = () => {
+      if (projectionBusyRef.current) return;
+      const visibility = overlays.zones ? 'visible' : 'none';
+      try {
+        if (map.getLayer(fillId)) map.setLayoutProperty(fillId, 'visibility', visibility);
+      } catch {
+        // ignore
+      }
+      try {
+        if (map.getLayer(lineId)) map.setLayoutProperty(lineId, 'visibility', visibility);
+      } catch {
+        // ignore
+      }
+      try {
+        if (map.getLayer(labelId)) map.setLayoutProperty(labelId, 'visibility', visibility);
+      } catch {
+        // ignore
+      }
+
+      if (!zones) return;
+      if (!map.isStyleLoaded()) return;
+
+      try {
+        const existing = map.getSource(srcId) as GeoJSONSource | undefined;
+        if (existing) {
+          existing.setData(zones);
+        } else {
+          map.addSource(srcId, { type: 'geojson', data: zones } as GeoJSONSourceSpecification);
+        }
+
+        const style = map.getStyle();
+        const styleLayers = style && Array.isArray(style.layers) ? style.layers : [];
+        const firstSymbol = styleLayers.find((l) => (l as { type?: string } | undefined)?.type === 'symbol') as
+          | { id?: string }
+          | undefined;
+        const before = map.getLayer('deck-globe')
+          ? 'deck-globe'
+          : map.getLayer('ships')
+            ? 'ships'
+            : map.getLayer('seamark')
+              ? 'seamark'
+              : firstSymbol?.id;
+
+        const zoneMatchExpr =
+          hoveredZoneId !== null
+            ? (['==', ['to-string', ['coalesce', ['get', 'zoneId'], '']], hoveredZoneId] as unknown[])
+            : false;
+        const zoneLineWidthExpr = hoveredZoneId
+          ? ([
+              'interpolate',
+              ['linear'],
+              ['zoom'],
+              4,
+              ['case', zoneMatchExpr, 1.6, 0.8],
+              10,
+              ['case', zoneMatchExpr, 2.0, 1.4],
+              14,
+              ['case', zoneMatchExpr, 2.8, 2.1],
+            ] as unknown as never)
+          : (['interpolate', ['linear'], ['zoom'], 4, 0.8, 10, 1.4, 14, 2.1] as never);
+
+        if (map.getLayer(fillId)) {
+          try {
+            map.setPaintProperty(
+              fillId,
+              'fill-opacity',
+              hoveredZoneId ? (['case', zoneMatchExpr, 0.24, 0.1] as unknown as number) : 0.12,
+            );
+          } catch {
+            // ignore
+          }
+        }
+
+        if (map.getLayer(lineId)) {
+          try {
+            map.setPaintProperty(
+              lineId,
+              'line-color',
+              hoveredZoneId
+                ? (['case', zoneMatchExpr, 'rgba(125,211,252,0.98)', zoneColorExpr as never] as never)
+                : (zoneColorExpr as never),
+            );
+          } catch {
+            // ignore
+          }
+          try {
+            map.setPaintProperty(lineId, 'line-opacity', hoveredZoneId ? (['case', zoneMatchExpr, 1, 0.85] as never) : 0.85);
+          } catch {
+            // ignore
+          }
+          try {
+            map.setPaintProperty(lineId, 'line-width', zoneLineWidthExpr);
+          } catch {
+            // ignore
+          }
+        }
+
+        if (!map.getLayer(fillId)) {
+          map.addLayer(
+            {
+              id: fillId,
+              type: 'fill',
+              source: srcId,
+              paint: {
+                'fill-color': zoneColorExpr as never,
+                'fill-opacity': hoveredZoneId
+                  ? ([
+                      'case',
+                      zoneMatchExpr,
+                      0.24,
+                      0.1,
+                    ] as unknown as number)
+                  : 0.12,
+              },
+              layout: { visibility },
+            } as unknown as LayerSpecification,
+            before,
+          );
+        }
+
+        if (!map.getLayer(lineId)) {
+          map.addLayer(
+            {
+              id: lineId,
+              type: 'line',
+              source: srcId,
+              paint: {
+                'line-color': hoveredZoneId
+                  ? (['case', zoneMatchExpr, 'rgba(125,211,252,0.98)', zoneColorExpr as never] as never)
+                  : (zoneColorExpr as never),
+                'line-opacity': hoveredZoneId
+                  ? (['case', zoneMatchExpr, 1, 0.85] as never)
+                  : 0.85,
+                'line-width': zoneLineWidthExpr,
+              },
+              layout: { visibility },
+            } as unknown as LayerSpecification,
+            before,
+          );
+        }
+
+        if (!map.getLayer(labelId)) {
+          map.addLayer(
+              {
+                id: labelId,
+                type: 'symbol',
+                source: srcId,
+                layout: {
+                  visibility,
+                  'symbol-placement': 'point',
+                  'text-field': zoneLabelExpr as never,
+                  'text-size': 11,
+                  'text-font': ['Noto Sans Regular', 'Open Sans Regular'],
+                'text-anchor': 'top',
+                'text-offset': [0, 0.35],
+                'text-allow-overlap': false,
+                'text-ignore-placement': false,
+              },
+              paint: {
+                'text-color': '#dbeafe',
+                'text-halo-color': 'rgba(2,6,23,0.85)',
+                'text-halo-width': 1.2,
+                'text-halo-blur': 0.8,
+              },
+            } as unknown as LayerSpecification,
+            undefined,
+          );
+        }
+      } catch (e) {
+        console.warn('Zones layer setup failed:', e);
+      } finally {
+        reorderGlobeFeatureLayers();
+        kickRepaint(map);
+      }
+    };
+
+    const stop = onMapStyleReady(map, ensure);
+    return () => {
+      stop();
+    };
+  }, [zones, overlays.zones, projection, baseMap, hoveredZoneId, mapSyncEpoch, reorderGlobeFeatureLayers]);
+}

apps/web/src/widgets/map3d/layers/bathymetry.ts

@@ -0,0 +1,292 @@
+import maplibregl, {
+  type LayerSpecification,
+  type StyleSpecification,
+  type VectorSourceSpecification,
+} from 'maplibre-gl';
+import type { BaseMapId, BathyZoomRange, MapProjectionId } from '../types';
+import { getLayerId, getMapTilerKey } from '../lib/mapCore';
+
+const BATHY_ZOOM_RANGES: BathyZoomRange[] = [
+  { id: 'bathymetry-fill', mercator: [6, 24], globe: [8, 24] },
+  { id: 'bathymetry-borders', mercator: [6, 24], globe: [8, 24] },
+  { id: 'bathymetry-borders-major', mercator: [4, 24], globe: [8, 24] },
+];
+
+export function injectOceanBathymetryLayers(style: StyleSpecification, maptilerKey: string) {
+  const oceanSourceId = 'maptiler-ocean';
+
+  if (!style.sources) style.sources = {} as StyleSpecification['sources'];
+  if (!style.layers) style.layers = [];
+
+  if (!style.sources[oceanSourceId]) {
+    style.sources[oceanSourceId] = {
+      type: 'vector',
+      url: `https://api.maptiler.com/tiles/ocean/tiles.json?key=${encodeURIComponent(maptilerKey)}`,
+    } satisfies VectorSourceSpecification as unknown as StyleSpecification['sources'][string];
+  }
+
+  const depth = ['to-number', ['get', 'depth']] as unknown as number[];
+  const depthLabel = ['concat', ['to-string', ['*', depth, -1]], 'm'] as unknown as string[];
+
+  // Bug #3 fix: shallow depths now use brighter teal tones to distinguish from deep ocean
+  const bathyFillColor = [
+    'interpolate',
+    ['linear'],
+    depth,
+    -11000,
+    '#00040b',
+    -8000,
+    '#010610',
+    -6000,
+    '#020816',
+    -4000,
+    '#030c1c',
+    -2000,
+    '#041022',
+    -1000,
+    '#051529',
+    -500,
+    '#061a30',
+    -200,
+    '#071f36',
+    -100,
+    '#08263d',
+    -50,
+    '#0e3d5e',
+    -20,
+    '#145578',
+    -10,
+    '#1a6e8e',
+    0,
+    '#2097a6',
+  ] as const;
+
+  const bathyFill: LayerSpecification = {
+    id: 'bathymetry-fill',
+    type: 'fill',
+    source: oceanSourceId,
+    'source-layer': 'contour',
+    minzoom: 5,
+    maxzoom: 24,
+    paint: {
+      'fill-color': bathyFillColor,
+      'fill-opacity': ['interpolate', ['linear'], ['zoom'], 0, 0.9, 5, 0.88, 8, 0.84, 10, 0.78],
+    },
+  } as unknown as LayerSpecification;
+
+  const bathyBandBorders: LayerSpecification = {
+    id: 'bathymetry-borders',
+    type: 'line',
+    source: oceanSourceId,
+    'source-layer': 'contour',
+    minzoom: 5,
+    maxzoom: 24,
+    paint: {
+      'line-color': 'rgba(255,255,255,0.06)',
+      'line-opacity': ['interpolate', ['linear'], ['zoom'], 4, 0.12, 8, 0.18, 12, 0.22],
+      'line-blur': ['interpolate', ['linear'], ['zoom'], 4, 0.8, 10, 0.2],
+      'line-width': ['interpolate', ['linear'], ['zoom'], 4, 0.2, 8, 0.35, 12, 0.6],
+    },
+  } as unknown as LayerSpecification;
+
+  const bathyLinesMinor: LayerSpecification = {
+    id: 'bathymetry-lines',
+    type: 'line',
+    source: oceanSourceId,
+    'source-layer': 'contour_line',
+    minzoom: 7,
+    paint: {
+      'line-color': [
+        'interpolate',
+        ['linear'],
+        depth,
+        -11000,
+        'rgba(255,255,255,0.04)',
+        -6000,
+        'rgba(255,255,255,0.05)',
+        -2000,
+        'rgba(255,255,255,0.07)',
+        0,
+        'rgba(255,255,255,0.10)',
+      ],
+      'line-opacity': ['interpolate', ['linear'], ['zoom'], 8, 0.18, 10, 0.22, 12, 0.28],
+      'line-blur': ['interpolate', ['linear'], ['zoom'], 8, 0.8, 11, 0.3],
+      'line-width': ['interpolate', ['linear'], ['zoom'], 8, 0.35, 10, 0.55, 12, 0.85],
+    },
+  } as unknown as LayerSpecification;
+
+  const majorDepths = [-50, -100, -200, -500, -1000, -2000, -4000, -6000, -8000, -9500];
+  const bathyMajorDepthFilter: unknown[] = [
+    'in',
+    ['to-number', ['get', 'depth']],
+    ['literal', majorDepths],
+  ] as unknown[];
+
+  const bathyLinesMajor: LayerSpecification = {
+    id: 'bathymetry-lines-major',
+    type: 'line',
+    source: oceanSourceId,
+    'source-layer': 'contour_line',
+    minzoom: 7,
+    maxzoom: 24,
+    filter: bathyMajorDepthFilter as unknown as unknown[],
+    paint: {
+      'line-color': 'rgba(255,255,255,0.16)',
+      'line-opacity': ['interpolate', ['linear'], ['zoom'], 8, 0.22, 10, 0.28, 12, 0.34],
+      'line-blur': ['interpolate', ['linear'], ['zoom'], 8, 0.4, 11, 0.2],
+      'line-width': ['interpolate', ['linear'], ['zoom'], 8, 0.6, 10, 0.95, 12, 1.3],
+    },
+  } as unknown as LayerSpecification;
+
+  const bathyBandBordersMajor: LayerSpecification = {
+    id: 'bathymetry-borders-major',
+    type: 'line',
+    source: oceanSourceId,
+    'source-layer': 'contour',
+    minzoom: 3,
+    maxzoom: 24,
+    filter: bathyMajorDepthFilter as unknown as unknown[],
+    paint: {
+      'line-color': 'rgba(255,255,255,0.14)',
+      'line-opacity': ['interpolate', ['linear'], ['zoom'], 3, 0.10, 6, 0.16, 8, 0.2, 12, 0.26],
+      'line-blur': ['interpolate', ['linear'], ['zoom'], 3, 0.5, 6, 0.35, 10, 0.15],
+      'line-width': ['interpolate', ['linear'], ['zoom'], 3, 0.25, 6, 0.4, 8, 0.55, 12, 0.85],
+    },
+  } as unknown as LayerSpecification;
+
+  const bathyLabels: LayerSpecification = {
+    id: 'bathymetry-labels',
+    type: 'symbol',
+    source: oceanSourceId,
+    'source-layer': 'contour_line',
+    minzoom: 10,
+    filter: bathyMajorDepthFilter as unknown as unknown[],
+    layout: {
+      'symbol-placement': 'line',
+      'text-field': depthLabel,
+      'text-font': ['Noto Sans Regular', 'Open Sans Regular'],
+      'text-size': ['interpolate', ['linear'], ['zoom'], 10, 12, 12, 14, 14, 15],
+      'text-allow-overlap': false,
+      'text-padding': 2,
+      'text-rotation-alignment': 'map',
+    },
+    paint: {
+      'text-color': 'rgba(226,232,240,0.72)',
+      'text-halo-color': 'rgba(2,6,23,0.82)',
+      'text-halo-width': 1.0,
+      'text-halo-blur': 0.6,
+    },
+  } as unknown as LayerSpecification;
+
+  const landformLabels: LayerSpecification = {
+    id: 'bathymetry-landforms',
+    type: 'symbol',
+    source: oceanSourceId,
+    'source-layer': 'landform',
+    minzoom: 8,
+    filter: ['has', 'name'] as unknown as unknown[],
+    layout: {
+      'text-field': ['get', 'name'] as unknown as unknown[],
+      'text-font': ['Noto Sans Italic', 'Noto Sans Regular', 'Open Sans Italic', 'Open Sans Regular'],
+      'text-size': ['interpolate', ['linear'], ['zoom'], 8, 11, 10, 12, 12, 13],
+      'text-allow-overlap': false,
+      'text-anchor': 'center',
+      'text-offset': [0, 0.0],
+    },
+    paint: {
+      'text-color': 'rgba(148,163,184,0.70)',
+      'text-halo-color': 'rgba(2,6,23,0.85)',
+      'text-halo-width': 1.0,
+      'text-halo-blur': 0.7,
+    },
+  } as unknown as LayerSpecification;
+
+  const layers = Array.isArray(style.layers) ? (style.layers as unknown as LayerSpecification[]) : [];
+  if (!Array.isArray(style.layers)) {
+    style.layers = layers as unknown as StyleSpecification['layers'];
+  }
+
+  // Brighten base-map water fills so shallow coasts, rivers & lakes blend naturally
+  // with the bathymetry gradient instead of appearing as near-black voids.
+  const waterRegex = /(water|sea|ocean|river|lake|coast|bay)/i;
+  const SHALLOW_WATER_FILL = '#14606e';
+  const SHALLOW_WATER_LINE = '#114f5c';
+  for (const layer of layers) {
+    const id = getLayerId(layer);
+    if (!id) continue;
+    const spec = layer as Record<string, unknown>;
+    const sourceLayer = String(spec['source-layer'] ?? '').toLowerCase();
+    const layerType = String(spec.type ?? '');
+    const isWater = waterRegex.test(id) || waterRegex.test(sourceLayer);
+    if (!isWater) continue;
+
+    const paint = (spec.paint ?? {}) as Record<string, unknown>;
+    if (layerType === 'fill') {
+      paint['fill-color'] = SHALLOW_WATER_FILL;
+      spec.paint = paint;
+    } else if (layerType === 'line') {
+      paint['line-color'] = SHALLOW_WATER_LINE;
+      spec.paint = paint;
+    }
+  }
+
+  const symbolIndex = layers.findIndex((l) => (l as { type?: unknown } | null)?.type === 'symbol');
+  const insertAt = symbolIndex >= 0 ? symbolIndex : layers.length;
+
+  const existingIds = new Set<string>();
+  for (const layer of layers) {
+    const id = getLayerId(layer);
+    if (id) existingIds.add(id);
+  }
+
+  const toInsert = [
+    bathyFill,
+    bathyBandBorders,
+    bathyBandBordersMajor,
+    bathyLinesMinor,
+    bathyLinesMajor,
+    bathyLabels,
+    landformLabels,
+  ].filter((l) => !existingIds.has(l.id));
+  if (toInsert.length > 0) layers.splice(insertAt, 0, ...toInsert);
+}
+
+export function applyBathymetryZoomProfile(map: maplibregl.Map, baseMap: BaseMapId, projection: MapProjectionId) {
+  if (!map || !map.isStyleLoaded()) return;
+  if (baseMap !== 'enhanced') return;
+  const isGlobe = projection === 'globe';
+
+  for (const range of BATHY_ZOOM_RANGES) {
+    if (!map.getLayer(range.id)) continue;
+    const [minzoom, maxzoom] = isGlobe ? range.globe : range.mercator;
+    try {
+      map.setLayoutProperty(range.id, 'visibility', 'visible');
+    } catch {
+      // ignore
+    }
+    try {
+      map.setLayerZoomRange(range.id, minzoom, maxzoom);
+    } catch {
+      // ignore
+    }
+  }
+}
+
+export async function resolveInitialMapStyle(signal: AbortSignal): Promise<string | StyleSpecification> {
+  const key = getMapTilerKey();
+  if (!key) return '/map/styles/osm-seamark.json';
+
+  const baseMapId = (import.meta.env.VITE_MAPTILER_BASE_MAP_ID || 'dataviz-dark').trim();
+  const styleUrl = `https://api.maptiler.com/maps/${encodeURIComponent(baseMapId)}/style.json?key=${encodeURIComponent(key)}`;
+
+  const res = await fetch(styleUrl, { signal, headers: { accept: 'application/json' } });
+  if (!res.ok) throw new Error(`MapTiler style fetch failed: ${res.status} ${res.statusText}`);
+  const json = (await res.json()) as StyleSpecification;
+  injectOceanBathymetryLayers(json, key);
+  return json;
+}
+
+export async function resolveMapStyle(baseMap: BaseMapId, signal: AbortSignal): Promise<string | StyleSpecification> {
+  if (baseMap === 'legacy') return '/map/styles/carto-dark.json';
+  return resolveInitialMapStyle(signal);
+}

apps/web/src/widgets/map3d/layers/seamark.ts

@@ -0,0 +1,27 @@
+import maplibregl, { type LayerSpecification } from 'maplibre-gl';
+
+export function ensureSeamarkOverlay(map: maplibregl.Map, beforeLayerId?: string) {
+  const srcId = 'seamark';
+  const layerId = 'seamark';
+
+  if (!map.getSource(srcId)) {
+    map.addSource(srcId, {
+      type: 'raster',
+      tiles: ['https://tiles.openseamap.org/seamark/{z}/{x}/{y}.png'],
+      tileSize: 256,
+      attribution: '© OpenSeaMap contributors',
+    });
+  }
+
+  if (!map.getLayer(layerId)) {
+    const layer: LayerSpecification = {
+      id: layerId,
+      type: 'raster',
+      source: srcId,
+      paint: { 'raster-opacity': 0.85 },
+    } as unknown as LayerSpecification;
+
+    const before = beforeLayerId && map.getLayer(beforeLayerId) ? beforeLayerId : undefined;
+    map.addLayer(layer, before);
+  }
+}

apps/web/src/widgets/map3d/lib/dashifyLine.ts

@@ -0,0 +1,31 @@
+import type { DashSeg } from '../types';
+
+export function dashifyLine(
+  from: [number, number],
+  to: [number, number],
+  suspicious: boolean,
+  distanceNm?: number,
+  fromMmsi?: number,
+  toMmsi?: number,
+): DashSeg[] {
+  const segs: DashSeg[] = [];
+  const steps = 14;
+  for (let i = 0; i < steps; i++) {
+    if (i % 2 === 1) continue;
+    const a0 = i / steps;
+    const a1 = (i + 1) / steps;
+    const lon0 = from[0] + (to[0] - from[0]) * a0;
+    const lat0 = from[1] + (to[1] - from[1]) * a0;
+    const lon1 = from[0] + (to[0] - from[0]) * a1;
+    const lat1 = from[1] + (to[1] - from[1]) * a1;
+    segs.push({
+      from: [lon0, lat0],
+      to: [lon1, lat1],
+      suspicious,
+      distanceNm,
+      fromMmsi,
+      toMmsi,
+    });
+  }
+  return segs;
+}

apps/web/src/widgets/map3d/lib/featureIds.ts

@@ -0,0 +1,19 @@
+export function makeOrderedPairKey(a: number, b: number) {
+  const left = Math.trunc(Math.min(a, b));
+  const right = Math.trunc(Math.max(a, b));
+  return `${left}-${right}`;
+}
+
+export function makePairLinkFeatureId(a: number, b: number, suffix?: string) {
+  const pair = makeOrderedPairKey(a, b);
+  return suffix ? `pair-${pair}-${suffix}` : `pair-${pair}`;
+}
+
+export function makeFcSegmentFeatureId(a: number, b: number, segmentIndex: number) {
+  const pair = makeOrderedPairKey(a, b);
+  return `fc-${pair}-${segmentIndex}`;
+}
+
+export function makeFleetCircleFeatureId(ownerKey: string) {
+  return `fleet-${ownerKey}`;
+}

apps/web/src/widgets/map3d/lib/geometry.ts

@@ -0,0 +1,62 @@
+import { DEG2RAD, RAD2DEG, EARTH_RADIUS_M } from '../constants';
+
+export const clampNumber = (value: number, minValue: number, maxValue: number) =>
+  Math.max(minValue, Math.min(maxValue, value));
+
+export function wrapLonDeg(lon: number) {
+  const v = ((lon + 180) % 360 + 360) % 360;
+  return v - 180;
+}
+
+export function destinationPointLngLat(
+  from: [number, number],
+  bearingDeg: number,
+  distanceMeters: number,
+): [number, number] {
+  const [lonDeg, latDeg] = from;
+  const lat1 = latDeg * DEG2RAD;
+  const lon1 = lonDeg * DEG2RAD;
+  const brng = bearingDeg * DEG2RAD;
+  const dr = Math.max(0, distanceMeters) / EARTH_RADIUS_M;
+  if (!Number.isFinite(dr) || dr === 0) return [lonDeg, latDeg];
+
+  const sinLat1 = Math.sin(lat1);
+  const cosLat1 = Math.cos(lat1);
+  const sinDr = Math.sin(dr);
+  const cosDr = Math.cos(dr);
+
+  const lat2 = Math.asin(sinLat1 * cosDr + cosLat1 * sinDr * Math.cos(brng));
+  const lon2 =
+    lon1 +
+    Math.atan2(
+      Math.sin(brng) * sinDr * cosLat1,
+      cosDr - sinLat1 * Math.sin(lat2),
+    );
+
+  const outLon = wrapLonDeg(lon2 * RAD2DEG);
+  const outLat = clampNumber(lat2 * RAD2DEG, -85.0, 85.0);
+  return [outLon, outLat];
+}
+
+export function circleRingLngLat(center: [number, number], radiusMeters: number, steps = 72): [number, number][] {
+  const [lon0, lat0] = center;
+  const latRad = lat0 * DEG2RAD;
+  const cosLat = Math.max(1e-6, Math.cos(latRad));
+  const r = Math.max(0, radiusMeters);
+
+  const ring: [number, number][] = [];
+  for (let i = 0; i <= steps; i++) {
+    const a = (i / steps) * Math.PI * 2;
+    const dy = r * Math.sin(a);
+    const dx = r * Math.cos(a);
+    const dLat = (dy / EARTH_RADIUS_M) / DEG2RAD;
+    const dLon = (dx / (EARTH_RADIUS_M * cosLat)) / DEG2RAD;
+    ring.push([lon0 + dLon, lat0 + dLat]);
+  }
+  return ring;
+}
+
+export function normalizeAngleDeg(value: number, offset = 0): number {
+  const v = value + offset;
+  return ((v % 360) + 360) % 360;
+}

apps/web/src/widgets/map3d/lib/globeShipIcon.ts

@@ -0,0 +1,76 @@
+import maplibregl from 'maplibre-gl';
+
+export function buildFallbackGlobeShipIcon() {
+  const size = 96;
+  const canvas = document.createElement('canvas');
+  canvas.width = size;
+  canvas.height = size;
+  const ctx = canvas.getContext('2d');
+  if (!ctx) return null;
+
+  ctx.clearRect(0, 0, size, size);
+  ctx.fillStyle = 'rgba(255,255,255,1)';
+  ctx.beginPath();
+  ctx.moveTo(size / 2, 6);
+  ctx.lineTo(size / 2 - 14, 24);
+  ctx.lineTo(size / 2 - 18, 58);
+  ctx.lineTo(size / 2 - 10, 88);
+  ctx.lineTo(size / 2 + 10, 88);
+  ctx.lineTo(size / 2 + 18, 58);
+  ctx.lineTo(size / 2 + 14, 24);
+  ctx.closePath();
+  ctx.fill();
+
+  ctx.fillRect(size / 2 - 8, 34, 16, 18);
+
+  return ctx.getImageData(0, 0, size, size);
+}
+
+export function buildFallbackGlobeAnchoredShipIcon() {
+  const baseImage = buildFallbackGlobeShipIcon();
+  if (!baseImage) return null;
+
+  const size = baseImage.width;
+  const canvas = document.createElement('canvas');
+  canvas.width = size;
+  canvas.height = size;
+  const ctx = canvas.getContext('2d');
+  if (!ctx) return null;
+
+  ctx.putImageData(baseImage, 0, 0);
+
+  ctx.strokeStyle = 'rgba(248,250,252,1)';
+  ctx.lineWidth = 5;
+  ctx.lineCap = 'round';
+  ctx.beginPath();
+  const cx = size / 2;
+  ctx.moveTo(cx - 18, 76);
+  ctx.lineTo(cx + 18, 76);
+  ctx.moveTo(cx, 66);
+  ctx.lineTo(cx, 82);
+  ctx.moveTo(cx, 82);
+  ctx.arc(cx, 82, 7, 0, Math.PI * 2);
+  ctx.moveTo(cx, 82);
+  ctx.lineTo(cx, 88);
+  ctx.moveTo(cx - 9, 88);
+  ctx.lineTo(cx + 9, 88);
+  ctx.stroke();
+
+  return ctx.getImageData(0, 0, size, size);
+}
+
+export function ensureFallbackShipImage(
+  map: maplibregl.Map,
+  imageId: string,
+  fallbackBuilder: () => ImageData | null = buildFallbackGlobeShipIcon,
+) {
+  if (!map || map.hasImage(imageId)) return;
+  const image = fallbackBuilder();
+  if (!image) return;
+
+  try {
+    map.addImage(imageId, image, { pixelRatio: 2, sdf: true });
+  } catch {
+    // ignore
+  }
+}

apps/web/src/widgets/map3d/lib/layerHelpers.ts

@@ -0,0 +1,122 @@
+import maplibregl, {
+  type GeoJSONSourceSpecification,
+  type LayerSpecification,
+} from 'maplibre-gl';
+
+export function removeLayerIfExists(map: maplibregl.Map, layerId: string | null | undefined) {
+  if (!layerId) return;
+  try {
+    if (map.getLayer(layerId)) {
+      map.removeLayer(layerId);
+    }
+  } catch {
+    // ignore
+  }
+}
+
+export function removeSourceIfExists(map: maplibregl.Map, sourceId: string) {
+  try {
+    if (map.getSource(sourceId)) {
+      map.removeSource(sourceId);
+    }
+  } catch {
+    // ignore
+  }
+}
+
+const GLOBE_NATIVE_LAYER_IDS = [
+  'ships-globe-halo',
+  'ships-globe-outline',
+  'ships-globe',
+  'ships-globe-label',
+  'ships-globe-hover-halo',
+  'ships-globe-hover-outline',
+  'ships-globe-hover',
+  'pair-lines-ml',
+  'fc-lines-ml',
+  'fleet-circles-ml-fill',
+  'fleet-circles-ml',
+  'pair-range-ml',
+  'subcables-line',
+  'subcables-line-hover',
+  'subcables-label',
+  'deck-globe',
+];
+
+const GLOBE_NATIVE_SOURCE_IDS = [
+  'ships-globe-src',
+  'ships-globe-hover-src',
+  'pair-lines-ml-src',
+  'fc-lines-ml-src',
+  'fleet-circles-ml-src',
+  'fleet-circles-ml-fill-src',
+  'pair-range-ml-src',
+  'subcables-src',
+];
+
+export function clearGlobeNativeLayers(map: maplibregl.Map) {
+  for (const id of GLOBE_NATIVE_LAYER_IDS) {
+    removeLayerIfExists(map, id);
+  }
+  for (const id of GLOBE_NATIVE_SOURCE_IDS) {
+    removeSourceIfExists(map, id);
+  }
+}
+
+export function ensureGeoJsonSource(
+  map: maplibregl.Map,
+  sourceId: string,
+  data: GeoJSON.GeoJSON,
+) {
+  const existing = map.getSource(sourceId);
+  if (existing) {
+    (existing as maplibregl.GeoJSONSource).setData(data);
+  } else {
+    map.addSource(sourceId, {
+      type: 'geojson',
+      data,
+    } satisfies GeoJSONSourceSpecification);
+  }
+}
+
+export function ensureLayer(
+  map: maplibregl.Map,
+  spec: LayerSpecification,
+  options?: { before?: string },
+) {
+  if (map.getLayer(spec.id)) return;
+  const before = options?.before && map.getLayer(options.before) ? options.before : undefined;
+  map.addLayer(spec, before);
+}
+
+export function setLayerVisibility(map: maplibregl.Map, layerId: string, visible: boolean) {
+  if (!map.getLayer(layerId)) return;
+  try {
+    map.setLayoutProperty(layerId, 'visibility', visible ? 'visible' : 'none');
+  } catch {
+    // ignore
+  }
+}
+
+export function cleanupLayers(
+  map: maplibregl.Map,
+  layerIds: string[],
+  sourceIds: string[],
+) {
+  requestAnimationFrame(() => {
+    for (const id of layerIds) {
+      try {
+        if (map.getLayer(id)) map.removeLayer(id);
+      } catch {
+        // ignore
+      }
+    }
+    for (const id of sourceIds) {
+      try {
+        if (map.getSource(id)) map.removeSource(id);
+      } catch {
+        // ignore
+      }
+    }
+  });
+}

apps/web/src/widgets/map3d/lib/mapCore.ts

@@ -0,0 +1,124 @@
+import maplibregl from 'maplibre-gl';
+import type { MapProjectionId } from '../types';
+
+export function kickRepaint(map: maplibregl.Map | null) {
+  if (!map) return;
+  try {
+    if (map.isStyleLoaded()) map.triggerRepaint();
+  } catch {
+    // ignore
+  }
+  try {
+    requestAnimationFrame(() => {
+      try {
+        if (map.isStyleLoaded()) map.triggerRepaint();
+      } catch {
+        // ignore
+      }
+    });
+    requestAnimationFrame(() => {
+      try {
+        if (map.isStyleLoaded()) map.triggerRepaint();
+      } catch {
+        // ignore
+      }
+    });
+  } catch {
+    // ignore (e.g., non-browser env)
+  }
+}
+
+export function onMapStyleReady(map: maplibregl.Map | null, callback: () => void) {
+  if (!map) {
+    return () => {
+      // noop
+    };
+  }
+  if (map.isStyleLoaded()) {
+    callback();
+    return () => {
+      // noop
+    };
+  }
+
+  let fired = false;
+  const runOnce = () => {
+    if (!map || fired || !map.isStyleLoaded()) return;
+    fired = true;
+    callback();
+    try {
+      map.off('style.load', runOnce);
+      map.off('styledata', runOnce);
+      map.off('idle', runOnce);
+    } catch {
+      // ignore
+    }
+  };
+
+  map.on('style.load', runOnce);
+  map.on('styledata', runOnce);
+  map.on('idle', runOnce);
+
+  return () => {
+    if (fired) return;
+    fired = true;
+    try {
+      if (!map) return;
+      map.off('style.load', runOnce);
+      map.off('styledata', runOnce);
+      map.off('idle', runOnce);
+    } catch {
+      // ignore
+    }
+  };
+}
+
+export function extractProjectionType(map: maplibregl.Map): MapProjectionId | undefined {
+  const projection = map.getProjection?.();
+  if (!projection || typeof projection !== 'object') return undefined;
+
+  const rawType = (projection as { type?: unknown; name?: unknown }).type ?? (projection as { type?: unknown; name?: unknown }).name;
+  if (rawType === 'globe') return 'globe';
+  if (rawType === 'mercator') return 'mercator';
+  return undefined;
+}
+
+export function getMapTilerKey(): string | null {
+  const k = import.meta.env.VITE_MAPTILER_KEY;
+  if (typeof k !== 'string') return null;
+  const v = k.trim();
+  return v ? v : null;
+}
+
+export function getLayerId(value: unknown): string | null {
+  if (!value || typeof value !== 'object') return null;
+  const candidate = (value as { id?: unknown }).id;
+  return typeof candidate === 'string' ? candidate : null;
+}
+
+export function sanitizeDeckLayerList(value: unknown): unknown[] {
+  if (!Array.isArray(value)) return [];
+  const seen = new Set<string>();
+  const out: unknown[] = [];
+  let dropped = 0;
+
+  for (const layer of value) {
+    const layerId = getLayerId(layer);
+    if (!layerId) {
+      dropped += 1;
+      continue;
+    }
+    if (seen.has(layerId)) {
+      dropped += 1;
+      continue;
+    }
+    seen.add(layerId);
+    out.push(layer);
+  }
+
+  if (dropped > 0 && import.meta.env.DEV) {
+    console.warn(`Sanitized deck layer list: dropped ${dropped} invalid/duplicate entries`);
+  }
+
+  return out;
+}

apps/web/src/widgets/map3d/lib/mlExpressions.ts

@@ -0,0 +1,68 @@
+export function makeMmsiPairHighlightExpr(aField: string, bField: string, hoveredMmsiList: number[]) {
+  if (!Array.isArray(hoveredMmsiList) || hoveredMmsiList.length < 2) {
+    return false;
+  }
+  const inA = ['in', ['to-number', ['get', aField]], ['literal', hoveredMmsiList]] as unknown[];
+  const inB = ['in', ['to-number', ['get', bField]], ['literal', hoveredMmsiList]] as unknown[];
+  return ['all', inA, inB] as unknown[];
+}
+
+export function makeMmsiAnyEndpointExpr(aField: string, bField: string, hoveredMmsiList: number[]) {
+  if (!Array.isArray(hoveredMmsiList) || hoveredMmsiList.length === 0) {
+    return false;
+  }
+  const literal = ['literal', hoveredMmsiList] as unknown[];
+  return [
+    'any',
+    ['in', ['to-number', ['get', aField]], literal],
+    ['in', ['to-number', ['get', bField]], literal],
+  ] as unknown[];
+}
+
+export function makeFleetOwnerMatchExpr(hoveredOwnerKeys: string[]) {
+  if (!Array.isArray(hoveredOwnerKeys) || hoveredOwnerKeys.length === 0) {
+    return false;
+  }
+  const expr = ['match', ['to-string', ['coalesce', ['get', 'ownerKey'], '']]] as unknown[];
+  for (const ownerKey of hoveredOwnerKeys) {
+    expr.push(String(ownerKey), true);
+  }
+  expr.push(false);
+  return expr;
+}
+
+export function makeFleetMemberMatchExpr(hoveredFleetMmsiList: number[]) {
+  if (!Array.isArray(hoveredFleetMmsiList) || hoveredFleetMmsiList.length === 0) {
+    return false;
+  }
+  const clauses = hoveredFleetMmsiList.map((mmsi) =>
+    ['in', mmsi, ['coalesce', ['get', 'vesselMmsis'], ['literal', []]]] as unknown[],
+  );
+  return ['any', ...clauses] as unknown[];
+}
+
+export function makeGlobeCircleRadiusExpr() {
+  const base3 = 4;
+  const base7 = 6;
+  const base10 = 8;
+  const base14 = 12;
+  const base18 = 32;
+
+  return [
+    'interpolate',
+    ['linear'],
+    ['zoom'],
+    3,
+    ['case', ['==', ['get', 'selected'], 1], 4.6, ['==', ['get', 'highlighted'], 1], 4.2, base3],
+    7,
+    ['case', ['==', ['get', 'selected'], 1], 6.8, ['==', ['get', 'highlighted'], 1], 6.2, base7],
+    10,
+    ['case', ['==', ['get', 'selected'], 1], 9.0, ['==', ['get', 'highlighted'], 1], 8.2, base10],
+    14,
+    ['case', ['==', ['get', 'selected'], 1], 13.5, ['==', ['get', 'highlighted'], 1], 12.6, base14],
+    18,
+    ['case', ['==', ['get', 'selected'], 1], 36, ['==', ['get', 'highlighted'], 1], 34, base18],
+  ];
+}
+
+export const GLOBE_SHIP_CIRCLE_RADIUS_EXPR = makeGlobeCircleRadiusExpr() as never;

apps/web/src/widgets/map3d/lib/setUtils.ts

@@ -0,0 +1,79 @@
+export function toNumberSet(values: number[] | undefined | null) {
+  const out = new Set<number>();
+  if (!values) return out;
+  for (const value of values) {
+    if (Number.isFinite(value)) {
+      out.add(value);
+    }
+  }
+  return out;
+}
+
+export function mergeNumberSets(...sets: Set<number>[]) {
+  const out = new Set<number>();
+  for (const s of sets) {
+    for (const v of s) {
+      out.add(v);
+    }
+  }
+  return out;
+}
+
+export function makeSetSignature(values: Set<number>) {
+  return Array.from(values).sort((a, b) => a - b).join(',');
+}
+
+export function toSafeNumber(value: unknown): number | null {
+  if (typeof value === 'number' && Number.isFinite(value)) return value;
+  return null;
+}
+
+export function toIntMmsi(value: unknown): number | null {
+  const n = toSafeNumber(value);
+  if (n == null) return null;
+  return Math.trunc(n);
+}
+
+export function isFiniteNumber(x: unknown): x is number {
+  return typeof x === 'number' && Number.isFinite(x);
+}
+
+export const toNumberArray = (values: unknown): number[] => {
+  if (values == null) return [];
+  if (Array.isArray(values)) {
+    return values as unknown as number[];
+  }
+  if (typeof values === 'number' && Number.isFinite(values)) {
+    return [values];
+  }
+  if (typeof values === 'string') {
+    const value = toSafeNumber(Number(values));
+    return value == null ? [] : [value];
+  }
+  if (typeof values === 'object') {
+    if (typeof (values as { [Symbol.iterator]?: unknown })?.[Symbol.iterator] === 'function') {
+      try {
+        return Array.from(values as Iterable<unknown>) as number[];
+      } catch {
+        return [];
+      }
+    }
+  }
+  return [];
+};
+
+export const makeUniqueSorted = (values: unknown) => {
+  const maybeArray = toNumberArray(values);
+  const normalized = Array.isArray(maybeArray) ? maybeArray : [];
+  const unique = Array.from(new Set(normalized.filter((value) => Number.isFinite(value))));
+  unique.sort((a, b) => a - b);
+  return unique;
+};
+
+export const equalNumberArrays = (a: number[], b: number[]) => {
+  if (a.length !== b.length) return false;
+  for (let i = 0; i < a.length; i += 1) {
+    if (a[i] !== b[i]) return false;
+  }
+  return true;
+};

apps/web/src/widgets/map3d/lib/shipUtils.ts

@@ -0,0 +1,117 @@
+import type { AisTarget } from '../../../entities/aisTarget/model/types';
+import type { LegacyVesselInfo } from '../../../entities/legacyVessel/model/types';
+import { rgbToHex } from '../../../shared/lib/map/palette';
+import {
+  ANCHOR_SPEED_THRESHOLD_KN,
+  LEGACY_CODE_COLORS,
+  MAP_SELECTED_SHIP_RGB,
+  MAP_HIGHLIGHT_SHIP_RGB,
+  MAP_DEFAULT_SHIP_RGB,
+} from '../constants';
+import { isFiniteNumber } from './setUtils';
+import { normalizeAngleDeg } from './geometry';
+
+export function toValidBearingDeg(value: unknown): number | null {
+  if (typeof value !== 'number' || !Number.isFinite(value)) return null;
+  if (value === 511) return null;
+  if (value < 0) return null;
+  if (value >= 360) return null;
+  return value;
+}
+
+export function isAnchoredShip({
+  sog,
+  cog,
+  heading,
+}: {
+  sog: number | null | undefined;
+  cog: number | null | undefined;
+  heading: number | null | undefined;
+}): boolean {
+  if (!isFiniteNumber(sog)) return true;
+  if (sog <= ANCHOR_SPEED_THRESHOLD_KN) return true;
+  return toValidBearingDeg(cog) == null && toValidBearingDeg(heading) == null;
+}
+
+export function getDisplayHeading({
+  cog,
+  heading,
+  offset = 0,
+}: {
+  cog: number | null | undefined;
+  heading: number | null | undefined;
+  offset?: number;
+}) {
+  const raw = toValidBearingDeg(cog) ?? toValidBearingDeg(heading) ?? 0;
+  return normalizeAngleDeg(raw, offset);
+}
+
+export function lightenColor(rgb: [number, number, number], ratio = 0.32) {
+  const out = rgb.map((v) => Math.round(v + (255 - v) * ratio) as number) as [number, number, number];
+  return out;
+}
+
+export function getGlobeBaseShipColor({
+  legacy,
+  sog,
+}: {
+  legacy: string | null;
+  sog: number | null;
+}) {
+  if (legacy) {
+    const rgb = LEGACY_CODE_COLORS[legacy];
+    if (rgb) return rgbToHex(lightenColor(rgb, 0.38));
+  }
+
+  if (!isFiniteNumber(sog)) return 'rgba(100,116,139,0.55)';
+  if (sog >= 10) return 'rgba(148,163,184,0.78)';
+  if (sog >= 1) return 'rgba(100,116,139,0.74)';
+  return 'rgba(71,85,105,0.68)';
+}
+
+export function getShipColor(
+  t: AisTarget,
+  selectedMmsi: number | null,
+  legacyShipCode: string | null,
+  highlightedMmsis: Set<number>,
+): [number, number, number, number] {
+  if (selectedMmsi && t.mmsi === selectedMmsi) {
+    return [MAP_SELECTED_SHIP_RGB[0], MAP_SELECTED_SHIP_RGB[1], MAP_SELECTED_SHIP_RGB[2], 255];
+  }
+  if (highlightedMmsis.has(t.mmsi)) {
+    return [MAP_HIGHLIGHT_SHIP_RGB[0], MAP_HIGHLIGHT_SHIP_RGB[1], MAP_HIGHLIGHT_SHIP_RGB[2], 235];
+  }
+  if (legacyShipCode) {
+    const rgb = LEGACY_CODE_COLORS[legacyShipCode];
+    if (rgb) return [rgb[0], rgb[1], rgb[2], 235];
+    return [245, 158, 11, 235];
+  }
+  if (!isFiniteNumber(t.sog)) return [MAP_DEFAULT_SHIP_RGB[0], MAP_DEFAULT_SHIP_RGB[1], MAP_DEFAULT_SHIP_RGB[2], 130];
+  if (t.sog >= 10) return [148, 163, 184, 185];
+  if (t.sog >= 1) return [MAP_DEFAULT_SHIP_RGB[0], MAP_DEFAULT_SHIP_RGB[1], MAP_DEFAULT_SHIP_RGB[2], 175];
+  return [71, 85, 105, 165];
+}
+
+export function buildGlobeShipFeature(
+  t: AisTarget,
+  legacy: LegacyVesselInfo | undefined,
+  selectedMmsi: number | null,
+  highlightedMmsis: Set<number>,
+  offset: number,
+) {
+  const isSelected = selectedMmsi != null && t.mmsi === selectedMmsi ? 1 : 0;
+  const isHighlighted = highlightedMmsis.has(t.mmsi) ? 1 : 0;
+  const anchored = isAnchoredShip(t);
+
+  return {
+    mmsi: t.mmsi,
+    heading: getDisplayHeading({ cog: t.cog, heading: t.heading, offset }),
+    anchored,
+    color: getGlobeBaseShipColor({ legacy: legacy?.shipCode ?? null, sog: t.sog ?? null }),
+    selected: isSelected,
+    highlighted: isHighlighted,
+    permitted: legacy ? 1 : 0,
+    labelName: (t.name || '').trim() || legacy?.shipNameCn || legacy?.shipNameRoman || '',
+    legacyTag: legacy ? `${legacy.permitNo} (${legacy.shipCode})` : '',
+  };
+}

apps/web/src/widgets/map3d/lib/tooltips.ts

@@ -0,0 +1,169 @@
+import type { AisTarget } from '../../../entities/aisTarget/model/types';
+import type { LegacyVesselInfo } from '../../../entities/legacyVessel/model/types';
+import { isFiniteNumber, toSafeNumber } from './setUtils';
+
+export function formatNm(value: number | null | undefined) {
+  if (!isFiniteNumber(value)) return '-';
+  return `${value.toFixed(2)} NM`;
+}
+
+export function getLegacyTag(legacyHits: Map<number, LegacyVesselInfo> | null | undefined, mmsi: number) {
+  const legacy = legacyHits?.get(mmsi);
+  if (!legacy) return null;
+  return `${legacy.permitNo} (${legacy.shipCode})`;
+}
+
+export function getTargetName(
+  mmsi: number,
+  targetByMmsi: Map<number, AisTarget>,
+  legacyHits: Map<number, LegacyVesselInfo> | null | undefined,
+) {
+  const legacy = legacyHits?.get(mmsi);
+  const target = targetByMmsi.get(mmsi);
+  return (
+    (target?.name || '').trim() || legacy?.shipNameCn || legacy?.shipNameRoman || `MMSI ${mmsi}`
+  );
+}
+
+export function getShipTooltipHtml({
+  mmsi,
+  targetByMmsi,
+  legacyHits,
+}: {
+  mmsi: number;
+  targetByMmsi: Map<number, AisTarget>;
+  legacyHits: Map<number, LegacyVesselInfo> | null | undefined;
+}) {
+  const legacy = legacyHits?.get(mmsi);
+  const t = targetByMmsi.get(mmsi);
+  const name = getTargetName(mmsi, targetByMmsi, legacyHits);
+  const sog = isFiniteNumber(t?.sog) ? t.sog : null;
+  const cog = isFiniteNumber(t?.cog) ? t.cog : null;
+  const msg = t?.messageTimestamp ?? null;
+  const vesselType = t?.vesselType || '';
+
+  const legacyHtml = legacy
+    ? `<div style="margin-top: 6px; padding-top: 6px; border-top: 1px solid rgba(255,255,255,.08)">
+        <div><b>CN Permit</b> · <b>${legacy.shipCode}</b> · ${legacy.permitNo}</div>
+        <div>유효범위: ${legacy.workSeaArea || '-'}</div>
+      </div>`
+    : '';
+
+  return {
+    html: `<div style="font-family: system-ui; font-size: 12px; white-space: nowrap;">
+      <div style="font-weight: 700; margin-bottom: 4px;">${name}</div>
+      <div>MMSI: <b>${mmsi}</b>${vesselType ? ` · ${vesselType}` : ''}</div>
+      <div>SOG: <b>${sog ?? '?'}</b> kt · COG: <b>${cog ?? '?'}</b>°</div>
+      ${msg ? `<div style="opacity:.7; font-size: 11px; margin-top: 4px;">${msg}</div>` : ''}
+      ${legacyHtml}
+    </div>`,
+  };
+}
+
+export function getPairLinkTooltipHtml({
+  warn,
+  distanceNm,
+  aMmsi,
+  bMmsi,
+  legacyHits,
+  targetByMmsi,
+}: {
+  warn: boolean;
+  distanceNm: number | null | undefined;
+  aMmsi: number;
+  bMmsi: number;
+  legacyHits: Map<number, LegacyVesselInfo> | null | undefined;
+  targetByMmsi: Map<number, AisTarget>;
+}) {
+  const d = formatNm(distanceNm);
+  const a = getTargetName(aMmsi, targetByMmsi, legacyHits);
+  const b = getTargetName(bMmsi, targetByMmsi, legacyHits);
+  const aTag = getLegacyTag(legacyHits, aMmsi);
+  const bTag = getLegacyTag(legacyHits, bMmsi);
+  return {
+    html: `<div style="font-family: system-ui; font-size: 12px;">
+      <div style="font-weight: 700; margin-bottom: 4px;">쌍 연결</div>
+      <div>${aTag ?? `MMSI ${aMmsi}`}</div>
+      <div style="opacity:.85;">↔ ${bTag ?? `MMSI ${bMmsi}`}</div>
+      <div style="margin-top: 4px;">거리: <b>${d}</b> · 상태: <b>${warn ? '주의' : '정상'}</b></div>
+      <div style="opacity:.6; margin-top: 3px;">${a} / ${b}</div>
+    </div>`,
+  };
+}
+
+export function getFcLinkTooltipHtml({
+  suspicious,
+  distanceNm,
+  fcMmsi,
+  otherMmsi,
+  legacyHits,
+  targetByMmsi,
+}: {
+  suspicious: boolean;
+  distanceNm: number | null | undefined;
+  fcMmsi: number;
+  otherMmsi: number;
+  legacyHits: Map<number, LegacyVesselInfo> | null | undefined;
+  targetByMmsi: Map<number, AisTarget>;
+}) {
+  const d = formatNm(distanceNm);
+  const a = getTargetName(fcMmsi, targetByMmsi, legacyHits);
+  const b = getTargetName(otherMmsi, targetByMmsi, legacyHits);
+  const aTag = getLegacyTag(legacyHits, fcMmsi);
+  const bTag = getLegacyTag(legacyHits, otherMmsi);
+  return {
+    html: `<div style="font-family: system-ui; font-size: 12px;">
+      <div style="font-weight: 700; margin-bottom: 4px;">환적 연결</div>
+      <div>${aTag ?? `MMSI ${fcMmsi}`}</div>
+      <div style="opacity:.85;">→ ${bTag ?? `MMSI ${otherMmsi}`}</div>
+      <div style="margin-top: 4px;">거리: <b>${d}</b> · 상태: <b>${suspicious ? '의심' : '일반'}</b></div>
+      <div style="opacity:.6; margin-top: 3px;">${a} / ${b}</div>
+    </div>`,
+  };
+}
+
+export function getRangeTooltipHtml({
+  warn,
+  distanceNm,
+  aMmsi,
+  bMmsi,
+  legacyHits,
+}: {
+  warn: boolean;
+  distanceNm: number | null | undefined;
+  aMmsi: number;
+  bMmsi: number;
+  legacyHits: Map<number, LegacyVesselInfo> | null | undefined;
+}) {
+  const d = formatNm(distanceNm);
+  const aTag = getLegacyTag(legacyHits, aMmsi);
+  const bTag = getLegacyTag(legacyHits, bMmsi);
+  const radiusNm = toSafeNumber(distanceNm);
+  return {
+    html: `<div style="font-family: system-ui; font-size: 12px;">
+      <div style="font-weight: 700; margin-bottom: 4px;">쌍 연결범위</div>
+      <div>${aTag ?? `MMSI ${aMmsi}`}</div>
+      <div style="opacity:.85;">↔ ${bTag ?? `MMSI ${bMmsi}`}</div>
+      <div style="margin-top: 4px;">범위: <b>${d}</b> · 반경: <b>${formatNm(radiusNm == null ? null : radiusNm / 2)}</b> · 상태: <b>${warn ? '주의' : '정상'}</b></div>
+    </div>`,
+  };
+}
+
+export function getFleetCircleTooltipHtml({
+  ownerKey,
+  ownerLabel,
+  count,
+}: {
+  ownerKey: string;
+  ownerLabel?: string;
+  count: number;
+}) {
+  const displayOwner = ownerLabel && ownerLabel.trim() ? ownerLabel : ownerKey;
+  return {
+    html: `<div style="font-family: system-ui; font-size: 12px;">
+      <div style="font-weight: 700; margin-bottom: 4px;">선단 범위</div>
+      <div>소유주: ${displayOwner || '-'}</div>
+      <div>선박 수: <b>${count}</b></div>
+    </div>`,
+  };
+}

apps/web/src/widgets/map3d/lib/zoneUtils.ts

@@ -0,0 +1,40 @@
+import type { ZoneId } from '../../../entities/zone/model/meta';
+import { ZONE_META } from '../../../entities/zone/model/meta';
+
+function toTextValue(value: unknown): string {
+  if (value == null) return '';
+  return String(value).trim();
+}
+
+export function getZoneIdFromProps(props: Record<string, unknown> | null | undefined): string {
+  const safeProps = props || {};
+  const candidates = [
+    'zoneId',
+    'zone_id',
+    'zoneIdNo',
+    'zoneKey',
+    'zoneCode',
+    'ZONE_ID',
+    'ZONECODE',
+    'id',
+  ];
+
+  for (const key of candidates) {
+    const value = toTextValue(safeProps[key]);
+    if (value) return value;
+  }
+
+  return '';
+}
+
+export function getZoneDisplayNameFromProps(props: Record<string, unknown> | null | undefined): string {
+  const safeProps = props || {};
+  const nameCandidates = ['zoneName', 'zoneLabel', 'NAME', 'name', 'ZONE_NM', 'label'];
+  for (const key of nameCandidates) {
+    const name = toTextValue(safeProps[key]);
+    if (name) return name;
+  }
+  const zoneId = getZoneIdFromProps(safeProps);
+  if (!zoneId) return '수역';
+  return ZONE_META[(zoneId as ZoneId)]?.name || `수역 ${zoneId}`;
+}

apps/web/src/widgets/map3d/types.ts

@@ -0,0 +1,77 @@
+import type { AisTarget } from '../../entities/aisTarget/model/types';
+import type { LegacyVesselInfo } from '../../entities/legacyVessel/model/types';
+import type { SubcableGeoJson } from '../../entities/subcable/model/types';
+import type { ZonesGeoJson } from '../../entities/zone/api/useZones';
+import type { MapToggleState } from '../../features/mapToggles/MapToggles';
+import type { FcLink, FleetCircle, PairLink } from '../../features/legacyDashboard/model/types';
+
+export type Map3DSettings = {
+  showSeamark: boolean;
+  showShips: boolean;
+  showDensity: boolean;
+};
+
+export type BaseMapId = 'enhanced' | 'legacy';
+export type MapProjectionId = 'mercator' | 'globe';
+
+export interface Map3DProps {
+  targets: AisTarget[];
+  zones: ZonesGeoJson | null;
+  selectedMmsi: number | null;
+  hoveredMmsiSet?: number[];
+  hoveredFleetMmsiSet?: number[];
+  hoveredPairMmsiSet?: number[];
+  hoveredFleetOwnerKey?: string | null;
+  highlightedMmsiSet?: number[];
+  settings: Map3DSettings;
+  baseMap: BaseMapId;
+  projection: MapProjectionId;
+  overlays: MapToggleState;
+  onSelectMmsi: (mmsi: number | null) => void;
+  onToggleHighlightMmsi?: (mmsi: number) => void;
+  onViewBboxChange?: (bbox: [number, number, number, number]) => void;
+  legacyHits?: Map<number, LegacyVesselInfo> | null;
+  pairLinks?: PairLink[];
+  fcLinks?: FcLink[];
+  fleetCircles?: FleetCircle[];
+  onProjectionLoadingChange?: (loading: boolean) => void;
+  fleetFocus?: {
+    id: string | number;
+    center: [number, number];
+    zoom?: number;
+  };
+  onHoverFleet?: (ownerKey: string | null, fleetMmsiSet: number[]) => void;
+  onClearFleetHover?: () => void;
+  onHoverMmsi?: (mmsiList: number[]) => void;
+  onClearMmsiHover?: () => void;
+  onHoverPair?: (mmsiList: number[]) => void;
+  onClearPairHover?: () => void;
+  subcableGeo?: SubcableGeoJson | null;
+  hoveredCableId?: string | null;
+  onHoverCable?: (cableId: string | null) => void;
+  onClickCable?: (cableId: string | null) => void;
+}
+
+export type DashSeg = {
+  from: [number, number];
+  to: [number, number];
+  suspicious: boolean;
+  distanceNm?: number;
+  fromMmsi?: number;
+  toMmsi?: number;
+};
+
+export type PairRangeCircle = {
+  center: [number, number]; // [lon, lat]
+  radiusNm: number;
+  warn: boolean;
+  aMmsi: number;
+  bMmsi: number;
+  distanceNm: number;
+};
+
+export type BathyZoomRange = {
+  id: string;
+  mercator: [number, number];
+  globe: [number, number];
+};

apps/web/src/widgets/subcableInfo/SubcableInfoPanel.tsx

@@ -0,0 +1,107 @@
+import type { SubcableDetail } from '../../entities/subcable/model/types';
+
+interface Props {
+  detail: SubcableDetail;
+  color?: string;
+  onClose: () => void;
+}
+
+export function SubcableInfoPanel({ detail, color, onClose }: Props) {
+  const landingCount = detail.landing_points.length;
+  const countries = [...new Set(detail.landing_points.map((lp) => lp.country).filter(Boolean))];
+
+  return (
+    <div className="map-info" style={{ maxWidth: 340 }}>
+      <button className="close-btn" onClick={onClose} aria-label="close">
+        ✕
+      </button>
+
+      <div style={{ marginBottom: 8 }}>
+        <div style={{ display: 'flex', alignItems: 'center', gap: 8 }}>
+          {color && (
+            <div
+              style={{
+                width: 12,
+                height: 12,
+                borderRadius: 3,
+                backgroundColor: color,
+                flexShrink: 0,
+              }}
+            />
+          )}
+          <div style={{ fontSize: 16, fontWeight: 900, color: 'var(--accent)' }}>{detail.name}</div>
+        </div>
+        <div style={{ fontSize: 10, color: 'var(--muted)', marginTop: 2 }}>
+          Submarine Cable{detail.is_planned ? ' (Planned)' : ''}
+        </div>
+      </div>
+
+      <div className="ir">
+        <span className="il">길이</span>
+        <span className="iv">{detail.length || '-'}</span>
+      </div>
+      <div className="ir">
+        <span className="il">개통</span>
+        <span className="iv">{detail.rfs || '-'}</span>
+      </div>
+      {detail.owners && (
+        <div className="ir" style={{ alignItems: 'flex-start' }}>
+          <span className="il">운영사</span>
+          <span className="iv" style={{ wordBreak: 'break-word' }}>
+            {detail.owners}
+          </span>
+        </div>
+      )}
+      {detail.suppliers && (
+        <div className="ir">
+          <span className="il">공급사</span>
+          <span className="iv">{detail.suppliers}</span>
+        </div>
+      )}
+
+      {landingCount > 0 && (
+        <div style={{ marginTop: 8 }}>
+          <div style={{ fontSize: 10, fontWeight: 700, color: 'var(--muted)', marginBottom: 4 }}>
+            Landing Points ({landingCount}) · {countries.length} countries
+          </div>
+          <div
+            style={{
+              maxHeight: 140,
+              overflowY: 'auto',
+              fontSize: 10,
+              lineHeight: 1.6,
+              color: 'var(--text)',
+            }}
+          >
+            {detail.landing_points.map((lp) => (
+              <div key={lp.id}>
+                <span style={{ color: 'var(--muted)' }}>{lp.country}</span>{' '}
+                <b>{lp.name}</b>
+                {lp.is_tbd && <span style={{ color: '#F59E0B', marginLeft: 4 }}>TBD</span>}
+              </div>
+            ))}
+          </div>
+        </div>
+      )}
+
+      {detail.notes && (
+        <div style={{ marginTop: 8, fontSize: 10, color: 'var(--muted)', fontStyle: 'italic' }}>
+          {detail.notes}
+        </div>
+      )}
+
+      {detail.url && (
+        <div style={{ marginTop: 8 }}>
+          <a
+            href={detail.url}
+            target="_blank"
+            rel="noopener noreferrer"
+            style={{ fontSize: 10, color: 'var(--accent)' }}
+          >
+            Official website ↗
+          </a>
+        </div>
+      )}
+    </div>
+  );
+}

package.json

@@ -10,7 +10,8 @@
     "build:web": "npm -w @wing/web run build",
     "build:api": "npm -w @wing/api run build",
     "lint": "npm -w @wing/web run lint",
-    "prepare:data": "node scripts/prepare-zones.mjs && node scripts/prepare-legacy.mjs"
+    "prepare:data": "node scripts/prepare-zones.mjs && node scripts/prepare-legacy.mjs",
+    "prepare:subcables": "node scripts/prepare-subcables.mjs"
   },
   "devDependencies": {
     "xlsx": "^0.18.5"

scripts/prepare-subcables.mjs

@@ -0,0 +1,176 @@
+import fs from "node:fs/promises";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+
+const OUT_DIR = path.resolve(__dirname, "..", "apps", "web", "public", "data", "subcables");
+const GEO_URL = "https://www.submarinecablemap.com/api/v3/cable/cable-geo.json";
+const DETAILS_URL_BASE = "https://www.submarinecablemap.com/api/v3/cable/";
+
+const CONCURRENCY = Math.max(1, Math.min(24, Number(process.env.CONCURRENCY || 12)));
+const TIMEOUT_MS = Math.max(5_000, Math.min(60_000, Number(process.env.TIMEOUT_MS || 20_000)));
+
+function sleep(ms) {
+  return new Promise((resolve) => setTimeout(resolve, ms));
+}
+
+async function fetchText(url, { timeoutMs = TIMEOUT_MS } = {}) {
+  const controller = new AbortController();
+  const timeout = setTimeout(() => controller.abort(), timeoutMs);
+  try {
+    const res = await fetch(url, {
+      signal: controller.signal,
+      headers: {
+        accept: "application/json",
+      },
+    });
+    const text = await res.text();
+    const contentType = res.headers.get("content-type") || "";
+    if (!res.ok) {
+      throw new Error(`HTTP ${res.status} (${res.statusText})`);
+    }
+    return { text, contentType };
+  } finally {
+    clearTimeout(timeout);
+  }
+}
+
+async function fetchJson(url) {
+  const { text, contentType } = await fetchText(url);
+  if (!contentType.toLowerCase().includes("application/json")) {
+    const snippet = text.slice(0, 200).replace(/\s+/g, " ").trim();
+    throw new Error(`Unexpected content-type (${contentType || "unknown"}): ${snippet || "<empty>"}`);
+  }
+  try {
+    return JSON.parse(text);
+  } catch (e) {
+    throw new Error(`Invalid JSON: ${e instanceof Error ? e.message : String(e)}`);
+  }
+}
+
+async function fetchJsonWithRetry(url, attempts = 2) {
+  let lastErr = null;
+  for (let i = 0; i < attempts; i += 1) {
+    try {
+      return await fetchJson(url);
+    } catch (e) {
+      lastErr = e;
+      if (i < attempts - 1) {
+        await sleep(250 * (i + 1));
+      }
+    }
+  }
+  throw lastErr;
+}
+
+function pickCableDetails(raw) {
+  const obj = raw && typeof raw === "object" ? raw : {};
+  const landingPoints = Array.isArray(obj.landing_points) ? obj.landing_points : [];
+  return {
+    id: String(obj.id || ""),
+    name: String(obj.name || ""),
+    length: obj.length == null ? null : String(obj.length),
+    rfs: obj.rfs == null ? null : String(obj.rfs),
+    rfs_year: typeof obj.rfs_year === "number" ? obj.rfs_year : null,
+    is_planned: Boolean(obj.is_planned),
+    owners: obj.owners == null ? null : String(obj.owners),
+    suppliers: obj.suppliers == null ? null : String(obj.suppliers),
+    landing_points: landingPoints.map((lp) => {
+      const p = lp && typeof lp === "object" ? lp : {};
+      return {
+        id: String(p.id || ""),
+        name: String(p.name || ""),
+        country: String(p.country || ""),
+        is_tbd: p.is_tbd === true,
+      };
+    }),
+    notes: obj.notes == null ? null : String(obj.notes),
+    url: obj.url == null ? null : String(obj.url),
+  };
+}
+
+async function main() {
+  await fs.mkdir(OUT_DIR, { recursive: true });
+
+  console.log(`[subcables] fetching geojson: ${GEO_URL}`);
+  const geo = await fetchJsonWithRetry(GEO_URL, 3);
+  const geoPath = path.join(OUT_DIR, "cable-geo.json");
+  await fs.writeFile(geoPath, JSON.stringify(geo));
+
+  const features = Array.isArray(geo?.features) ? geo.features : [];
+  const ids = Array.from(
+    new Set(
+      features
+        .map((f) => f?.properties?.id)
+        .filter((v) => typeof v === "string" && v.trim().length > 0)
+        .map((v) => v.trim()),
+    ),
+  ).sort();
+
+  console.log(`[subcables] cables: ${ids.length} (concurrency=${CONCURRENCY}, timeoutMs=${TIMEOUT_MS})`);
+
+  const byId = {};
+  const failures = [];
+  let cursor = 0;
+  let completed = 0;
+  const startedAt = Date.now();
+
+  const worker = async () => {
+    for (;;) {
+      const idx = cursor;
+      cursor += 1;
+      if (idx >= ids.length) return;
+      const id = ids[idx];
+      const url = new URL(`${id}.json`, DETAILS_URL_BASE).toString();
+      try {
+        const raw = await fetchJsonWithRetry(url, 2);
+        const picked = pickCableDetails(raw);
+        if (!picked.id) {
+          throw new Error("Missing id in details response");
+        }
+        byId[id] = picked;
+      } catch (e) {
+        failures.push({ id, error: e instanceof Error ? e.message : String(e) });
+      } finally {
+        completed += 1;
+        if (completed % 25 === 0 || completed === ids.length) {
+          const sec = Math.max(1, Math.round((Date.now() - startedAt) / 1000));
+          const rate = (completed / sec).toFixed(1);
+          console.log(`[subcables] ${completed}/${ids.length} (${rate}/s)`);
+        }
+      }
+    }
+  };
+
+  await Promise.all(Array.from({ length: CONCURRENCY }, () => worker()));
+
+  const detailsOut = {
+    version: 1,
+    generated_at: new Date().toISOString(),
+    by_id: byId,
+  };
+  const detailsPath = path.join(OUT_DIR, "cable-details.min.json");
+  await fs.writeFile(detailsPath, JSON.stringify(detailsOut));
+
+  if (failures.length > 0) {
+    console.error(`[subcables] failures: ${failures.length}`);
+    for (const f of failures.slice(0, 30)) {
+      console.error(`- ${f.id}: ${f.error}`);
+    }
+    if (failures.length > 30) {
+      console.error(`- ... +${failures.length - 30} more`);
+    }
+    process.exitCode = 1;
+  }
+
+  console.log(`[subcables] wrote: ${geoPath}`);
+  console.log(`[subcables] wrote: ${detailsPath}`);
+}
+
+main().catch((e) => {
+  console.error(`[subcables] fatal: ${e instanceof Error ? e.stack || e.message : String(e)}`);
+  process.exitCode = 1;
+});
+