feat: 센서 그래프 실데이터 + 선박 모달 UI 개선 + KST/UTC 라디오

- SensorChart: 백엔드 실데이터(지진/기압) + 동적 x축 시간 + 히스토리 10M/30M/1H/3H/6H
- LiveControls: KST/UTC 토글 → 라디오 버튼 그룹
- ShipLayer: 모달 고정크기(300px), 드래그 가능, S&P Global 다중사진 슬라이드
- 선박 모달 CSS 통일 (태그 스타일, 2컬럼 그리드, 긴 값 단독행)
- 센서 API: hours→min 파라미터 (기본 2880=48h), 인증 예외 처리
- useIranData/useKoreaData: 센서 10분 polling + 선박 60분 초기/6분 incremental merge

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.claude/settings.json

@@ -83,5 +83,7 @@
         ]
       }
     ]
-  }
+  },
+  "deny": [],
+  "allow": []
 }

backend/src/main/java/gc/mda/kcg/auth/AuthFilter.java

@@ -21,13 +21,14 @@ public class AuthFilter extends OncePerRequestFilter {
 
     private static final String JWT_COOKIE_NAME = "kcg_token";
     private static final String AUTH_PATH_PREFIX = "/api/auth/";
+    private static final String SENSOR_PATH_PREFIX = "/api/sensor/";
 
     private final JwtProvider jwtProvider;
 
     @Override
     protected boolean shouldNotFilter(HttpServletRequest request) {
         String path = request.getRequestURI();
-        return path.startsWith(AUTH_PATH_PREFIX);
+        return path.startsWith(AUTH_PATH_PREFIX) || path.startsWith(SENSOR_PATH_PREFIX);
     }
 
     @Override

backend/src/main/java/gc/mda/kcg/domain/sensor/SensorController.java

@@ -18,11 +18,12 @@ public class SensorController {
 
     /**
      * 지진 이벤트 조회 (USGS 수집 데이터)
+     * @param min 조회 범위 (분 단위, 기본 2880 = 48시간)
      */
     @GetMapping("/seismic")
     public Map<String, Object> getSeismic(
-            @RequestParam(defaultValue = "24") int hours) {
+            @RequestParam(defaultValue = "2880") int min) {
-        Instant since = Instant.now().minus(hours, ChronoUnit.HOURS);
+        Instant since = Instant.now().minus(min, ChronoUnit.MINUTES);
         List<SensorDto.SeismicDto> data = seismicRepo
                 .findByEventTimeAfterOrderByEventTimeDesc(since)
                 .stream().map(SensorDto.SeismicDto::from).toList();
@@ -31,11 +32,12 @@ public class SensorController {
 
     /**
      * 기압 데이터 조회 (Open-Meteo 수집 데이터)
+     * @param min 조회 범위 (분 단위, 기본 2880 = 48시간)
      */
     @GetMapping("/pressure")
     public Map<String, Object> getPressure(
-            @RequestParam(defaultValue = "24") int hours) {
+            @RequestParam(defaultValue = "2880") int min) {
-        Instant since = Instant.now().minus(hours, ChronoUnit.HOURS);
+        Instant since = Instant.now().minus(min, ChronoUnit.MINUTES);
         List<SensorDto.PressureDto> data = pressureRepo
                 .findByReadingTimeAfterOrderByReadingTimeAsc(since)
                 .stream().map(SensorDto.PressureDto::from).toList();

frontend/src/App.css

@@ -1137,6 +1137,157 @@
   opacity: 0.7;
 }
 
+/* ═══ Ship popup modal ═══ */
+.vessel-photo-frame {
+  height: 160px;
+}
+
+.ship-popup-body {
+  width: 300px;
+  font-family: 'Courier New', monospace;
+  font-size: 11px;
+  line-height: 1.4;
+}
+
+.ship-popup-header {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  padding: 8px 10px;
+  border-radius: 4px 4px 0 0;
+  margin: -10px -10px 8px -10px;
+  color: #fff;
+}
+
+.ship-popup-name {
+  flex: 1;
+  font-size: 12px;
+  font-weight: 700;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.ship-popup-navy-badge {
+  flex-shrink: 0;
+  padding: 2px 6px;
+  border-radius: 3px;
+  font-size: 9px;
+  font-weight: 700;
+  color: #000;
+  line-height: 1;
+}
+
+/* Type tags row */
+.ship-popup-tags {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 4px;
+  padding-bottom: 6px;
+  margin-bottom: 6px;
+  border-bottom: 1px solid var(--kcg-border-light, rgba(100, 116, 139, 0.15));
+}
+
+.ship-tag {
+  display: inline-block;
+  padding: 2px 7px;
+  border-radius: 3px;
+  font-size: 10px;
+  font-weight: 600;
+  line-height: 1.4;
+  white-space: nowrap;
+}
+
+.ship-tag-primary {
+  color: #fff;
+}
+
+.ship-tag-secondary {
+  background: var(--kcg-border, rgba(100, 116, 139, 0.3));
+  color: var(--kcg-text-secondary, #94a3b8);
+}
+
+.ship-tag-dim {
+  background: var(--kcg-hover, rgba(100, 116, 139, 0.1));
+  color: var(--kcg-dim, #64748b);
+}
+
+/* Data grid */
+.ship-popup-grid {
+  display: grid;
+  grid-template-columns: 1fr 1fr;
+  column-gap: 12px;
+}
+
+.ship-popup-row {
+  display: flex;
+  justify-content: space-between;
+  padding: 2px 0;
+  border-bottom: 1px solid var(--kcg-border-light, rgba(100, 116, 139, 0.08));
+  overflow: hidden;
+  min-height: 18px;
+}
+
+.ship-popup-row:nth-last-child(1),
+.ship-popup-row:nth-last-child(2) {
+  border-bottom: none;
+}
+
+/* Full-width rows for long values (status, destination, ETA) */
+.ship-popup-full-row {
+  display: flex;
+  justify-content: space-between;
+  gap: 8px;
+  padding: 2px 0;
+  border-top: 1px solid var(--kcg-border-light, rgba(100, 116, 139, 0.08));
+}
+
+.ship-popup-full-row .ship-popup-value {
+  text-align: right;
+  min-width: 0;
+}
+
+.ship-popup-label {
+  color: var(--kcg-muted, #64748b);
+  font-size: 10px;
+  flex-shrink: 0;
+  margin-right: 4px;
+}
+
+.ship-popup-value {
+  font-size: 10px;
+  color: var(--kcg-text, #e2e8f0);
+  text-align: right;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+/* Footer */
+.ship-popup-footer {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  margin-top: 6px;
+  padding-top: 6px;
+  border-top: 1px solid var(--kcg-border-light, rgba(100, 116, 139, 0.15));
+}
+
+.ship-popup-timestamp {
+  font-size: 9px;
+  color: var(--kcg-dim, #64748b);
+}
+
+.ship-popup-link {
+  font-size: 10px;
+  color: var(--kcg-accent, #3b82f6);
+  text-decoration: none;
+}
+
+.ship-popup-link:hover {
+  text-decoration: underline;
+}
+
 /* Footer / Controls */
 .app-footer {
   background: var(--bg-card);
@@ -1890,6 +2041,39 @@
   color: var(--kcg-danger);
 }
 
+.tz-radio-group {
+  display: inline-flex;
+  border: 1px solid var(--kcg-border);
+  border-radius: 3px;
+  overflow: hidden;
+}
+
+.tz-radio-btn {
+  padding: 1px 6px;
+  font-size: 10px;
+  font-weight: 700;
+  font-family: 'Courier New', monospace;
+  border: none;
+  background: transparent;
+  color: var(--text-secondary);
+  cursor: pointer;
+  transition: all 0.15s;
+  line-height: 1.4;
+}
+
+.tz-radio-btn + .tz-radio-btn {
+  border-left: 1px solid var(--kcg-border);
+}
+
+.tz-radio-btn.active {
+  background: rgba(239, 68, 68, 0.15);
+  color: var(--kcg-danger);
+}
+
+.tz-radio-btn:hover:not(.active) {
+  color: var(--text-primary);
+}
+
 /* Live mode accent on header border */
 .app-live .app-header {
   border-bottom-color: rgba(239, 68, 68, 0.3);

frontend/src/App.tsx

@@ -119,6 +119,7 @@ function AuthenticatedApp({ user, onLogout }: AuthenticatedAppProps) {
   }, []);
 
   const [showCollectorMonitor, setShowCollectorMonitor] = useState(false);
+  const [timeZone, setTimeZone] = useState<'KST' | 'UTC'>('KST');
 
   const replay = useReplay();
   const monitor = useMonitor();
@@ -132,8 +133,6 @@ function AuthenticatedApp({ user, onLogout }: AuthenticatedAppProps) {
 
   // Unified time values based on current mode
   const currentTime = appMode === 'live' ? monitor.state.currentTime : replay.state.currentTime;
-  const startTime = appMode === 'live' ? monitor.startTime : replay.state.startTime;
-  const endTime = appMode === 'live' ? monitor.endTime : replay.state.endTime;
 
   // Iran data hook
   const iranData = useIranData({
@@ -430,10 +429,10 @@ function AuthenticatedApp({ user, onLogout }: AuthenticatedAppProps) {
           {layers.sensorCharts && (
             <section className="charts-panel">
               <SensorChart
-                data={iranData.sensorData}
+                seismicData={iranData.seismicData}
+                pressureData={iranData.pressureData}
                 currentTime={currentTime}
-                startTime={startTime}
+                historyMinutes={monitor.state.historyMinutes}
-                endTime={endTime}
               />
             </section>
           )}
@@ -447,6 +446,8 @@ function AuthenticatedApp({ user, onLogout }: AuthenticatedAppProps) {
                 aircraftCount={iranData.aircraft.length}
                 shipCount={iranData.ships.length}
                 satelliteCount={iranData.satPositions.length}
+                timeZone={timeZone}
+                onTimeZoneChange={setTimeZone}
               />
             ) : (
               <>
@@ -550,6 +551,8 @@ function AuthenticatedApp({ user, onLogout }: AuthenticatedAppProps) {
                 aircraftCount={koreaData.aircraft.length}
                 shipCount={koreaData.ships.length}
                 satelliteCount={koreaData.satPositions.length}
+                timeZone={timeZone}
+                onTimeZoneChange={setTimeZone}
               />
             ) : (
               <>

frontend/src/components/common/LiveControls.tsx

@@ -1,5 +1,4 @@
 import { useTranslation } from 'react-i18next';
-import { useState } from 'react';
 
 interface Props {
   currentTime: number;
@@ -8,35 +7,35 @@ interface Props {
   aircraftCount: number;
   shipCount: number;
   satelliteCount: number;
+  timeZone: 'KST' | 'UTC';
+  onTimeZoneChange: (tz: 'KST' | 'UTC') => void;
 }
 
 const HISTORY_PRESETS = [
+  { label: '10M', minutes: 10 },
   { label: '30M', minutes: 30 },
   { label: '1H', minutes: 60 },
   { label: '3H', minutes: 180 },
   { label: '6H', minutes: 360 },
-  { label: '12H', minutes: 720 },
-  { label: '24H', minutes: 1440 },
 ];
 
 function formatTime(epoch: number, tz: 'KST' | 'UTC'): string {
   const d = new Date(epoch);
+  const pad = (n: number) => String(n).padStart(2, '0');
   if (tz === 'UTC') {
-    const pad = (n: number) => String(n).padStart(2, '0');
+    return `${d.getUTCFullYear()}-${pad(d.getUTCMonth() + 1)}-${pad(d.getUTCDate())} ${pad(d.getUTCHours())}:${pad(d.getUTCMinutes())}:${pad(d.getUTCSeconds())}`;
-    return `${d.getUTCFullYear()}-${pad(d.getUTCMonth() + 1)}-${pad(d.getUTCDate())} ${pad(d.getUTCHours())}:${pad(d.getUTCMinutes())}:${pad(d.getUTCSeconds())} UTC`;
   }
-  // KST: 브라우저 로컬 타임존 사용 (한국 환경에서 자동 KST)
+  return `${d.getFullYear()}-${pad(d.getMonth() + 1)}-${pad(d.getDate())} ${pad(d.getHours())}:${pad(d.getMinutes())}:${pad(d.getSeconds())}`;
-  const pad = (n: number) => String(n).padStart(2, '0');
-  return `${d.getFullYear()}-${pad(d.getMonth() + 1)}-${pad(d.getDate())} ${pad(d.getHours())}:${pad(d.getMinutes())}:${pad(d.getSeconds())} KST`;
 }
 
 export function LiveControls({
   currentTime,
   historyMinutes,
   onHistoryChange,
+  timeZone,
+  onTimeZoneChange,
 }: Props) {
   const { t } = useTranslation();
-  const [timeZone, setTimeZone] = useState<'KST' | 'UTC'>('KST');
 
   return (
     <div className="live-controls">
@@ -47,24 +46,18 @@ export function LiveControls({
 
       <div className="live-clock" style={{ display: 'flex', alignItems: 'center', gap: '6px' }}>
         <span>{formatTime(currentTime, timeZone)}</span>
+        <div className="tz-radio-group">
+          {(['KST', 'UTC'] as const).map(tz => (
             <button
+              key={tz}
               type="button"
-          onClick={() => setTimeZone(prev => prev === 'KST' ? 'UTC' : 'KST')}
+              className={`tz-radio-btn ${timeZone === tz ? 'active' : ''}`}
-          style={{
+              onClick={() => onTimeZoneChange(tz)}
-            background: 'none',
-            border: '1px solid var(--kcg-border, rgba(100, 116, 139, 0.3))',
-            color: 'var(--kcg-text-secondary, #94a3b8)',
-            borderRadius: '3px',
-            padding: '1px 5px',
-            cursor: 'pointer',
-            fontSize: '10px',
-            fontFamily: 'monospace',
-            lineHeight: 1.2,
-          }}
-          title="KST/UTC 전환"
             >
-          {timeZone}
+              {tz}
             </button>
+          ))}
+        </div>
       </div>
 
       <div className="flex-1" />

frontend/src/components/common/SensorChart.tsx

@@ -8,33 +8,122 @@ import {
   CartesianGrid,
   Tooltip,
   ResponsiveContainer,
-  ReferenceLine,
 } from 'recharts';
-import type { SensorLog } from '../../types';
+import type { SeismicDto, PressureDto } from '../../services/sensorApi';
 
 interface Props {
-  data: SensorLog[];
+  seismicData: SeismicDto[];
+  pressureData: PressureDto[];
   currentTime: number;
-  startTime: number;
+  historyMinutes: number;
-  endTime: number;
 }
 
-export function SensorChart({ data, currentTime, startTime }: Props) {
+const MINUTE = 60_000;
+const BUCKET_COUNT = 48;
+
+function formatTickTime(epoch: number): string {
+  const d = new Date(epoch);
+  const pad = (n: number) => String(n).padStart(2, '0');
+  return `${pad(d.getMonth() + 1)}/${pad(d.getDate())} ${pad(d.getHours())}:${pad(d.getMinutes())}`;
+}
+
+function buildTicks(currentTime: number, historyMinutes: number): number[] {
+  const interval = historyMinutes * MINUTE;
+  const ticks: number[] = [];
+  for (let i = 8; i >= 0; i--) {
+    ticks.push(currentTime - i * interval);
+  }
+  return ticks;
+}
+
+function aggregateSeismic(
+  data: SeismicDto[],
+  rangeStart: number,
+  rangeEnd: number,
+): { time: number; value: number }[] {
+  const bucketSize = (rangeEnd - rangeStart) / BUCKET_COUNT;
+  const buckets = Array.from({ length: BUCKET_COUNT }, (_, i) => ({
+    time: rangeStart + (i + 0.5) * bucketSize,
+    value: 0,
+  }));
+  for (const ev of data) {
+    if (ev.timestamp < rangeStart || ev.timestamp > rangeEnd) continue;
+    const idx = Math.min(Math.floor((ev.timestamp - rangeStart) / bucketSize), BUCKET_COUNT - 1);
+    buckets[idx].value = Math.max(buckets[idx].value, ev.magnitude * 10);
+  }
+  return buckets;
+}
+
+function aggregatePressure(
+  data: PressureDto[],
+  rangeStart: number,
+  rangeEnd: number,
+): { time: number; value: number }[] {
+  const bucketSize = (rangeEnd - rangeStart) / BUCKET_COUNT;
+  const buckets = Array.from({ length: BUCKET_COUNT }, (_, i) => ({
+    time: rangeStart + (i + 0.5) * bucketSize,
+    values: [] as number[],
+  }));
+  for (const r of data) {
+    if (r.timestamp < rangeStart || r.timestamp > rangeEnd) continue;
+    const idx = Math.min(Math.floor((r.timestamp - rangeStart) / bucketSize), BUCKET_COUNT - 1);
+    buckets[idx].values.push(r.pressureHpa);
+  }
+  return buckets.map(b => ({
+    time: b.time,
+    value: b.values.length > 0 ? b.values.reduce((a, c) => a + c, 0) / b.values.length : 0,
+  }));
+}
+
+function generateDemoData(
+  rangeStart: number,
+  rangeEnd: number,
+  baseValue: number,
+  variance: number,
+): { time: number; value: number }[] {
+  const bucketSize = (rangeEnd - rangeStart) / BUCKET_COUNT;
+  return Array.from({ length: BUCKET_COUNT }, (_, i) => {
+    const t = rangeStart + (i + 0.5) * bucketSize;
+    const seed = Math.sin(t / 100_000) * 10000;
+    const noise = (seed - Math.floor(seed)) * 2 - 1;
+    return { time: t, value: Math.max(0, baseValue + noise * variance) };
+  });
+}
+
+export function SensorChart({ seismicData, pressureData, currentTime, historyMinutes }: Props) {
   const { t } = useTranslation();
 
-  const visibleData = useMemo(
+  const totalMinutes = historyMinutes * 8;
-    () => data.filter(d => d.timestamp <= currentTime),
+  const rangeStart = currentTime - totalMinutes * MINUTE;
-    [data, currentTime],
+  const rangeEnd = currentTime;
+
+  const ticks = useMemo(() => buildTicks(currentTime, historyMinutes), [currentTime, historyMinutes]);
+
+  const seismicChart = useMemo(
+    () => aggregateSeismic(seismicData, rangeStart, rangeEnd),
+    [seismicData, rangeStart, rangeEnd],
+  );
+  const pressureChart = useMemo(
+    () => aggregatePressure(pressureData, rangeStart, rangeEnd),
+    [pressureData, rangeStart, rangeEnd],
+  );
+  const noiseChart = useMemo(
+    () => generateDemoData(rangeStart, rangeEnd, 45, 30),
+    [rangeStart, rangeEnd],
+  );
+  const radiationChart = useMemo(
+    () => generateDemoData(rangeStart, rangeEnd, 0.08, 0.06),
+    [rangeStart, rangeEnd],
   );
 
-  const chartData = useMemo(
+  const commonXAxis = {
-    () =>
+    dataKey: 'time' as const,
-      visibleData.map(d => ({
+    type: 'number' as const,
-        ...d,
+    domain: [rangeStart, rangeEnd] as [number, number],
-        time: formatHour(d.timestamp, startTime),
+    ticks,
-      })),
+    tickFormatter: formatTickTime,
-    [visibleData, startTime],
+    tick: { fontSize: 9, fill: '#888' },
-  );
+  };
 
   return (
     <div className="sensor-chart">
@@ -43,13 +132,16 @@ export function SensorChart({ data, currentTime, startTime }: Props) {
         <div className="chart-item">
           <h4>{t('sensor.seismicActivity')}</h4>
           <ResponsiveContainer width="100%" height={80}>
-            <LineChart data={chartData}>
+            <LineChart data={seismicChart}>
               <CartesianGrid strokeDasharray="3 3" stroke="#333" />
-              <XAxis dataKey="time" tick={{ fontSize: 10, fill: '#888' }} />
+              <XAxis {...commonXAxis} />
               <YAxis domain={[0, 100]} tick={{ fontSize: 10, fill: '#888' }} />
-              <Tooltip contentStyle={{ background: '#1a1a2e', border: '1px solid #333' }} />
+              <Tooltip
-              <ReferenceLine x={formatHour(currentTime, startTime)} stroke="#fff" strokeDasharray="3 3" />
+                contentStyle={{ background: '#1a1a2e', border: '1px solid #333' }}
-              <Line type="monotone" dataKey="seismic" stroke="#ef4444" dot={false} strokeWidth={1.5} />
+                labelFormatter={formatTickTime}
+                formatter={(v: number) => [v.toFixed(1), 'Magnitude×10']}
+              />
+              <Line type="monotone" dataKey="value" stroke="#ef4444" dot={false} strokeWidth={1.5} />
             </LineChart>
           </ResponsiveContainer>
         </div>
@@ -57,12 +149,16 @@ export function SensorChart({ data, currentTime, startTime }: Props) {
         <div className="chart-item">
           <h4>{t('sensor.airPressureHpa')}</h4>
           <ResponsiveContainer width="100%" height={80}>
-            <LineChart data={chartData}>
+            <LineChart data={pressureChart}>
               <CartesianGrid strokeDasharray="3 3" stroke="#333" />
-              <XAxis dataKey="time" tick={{ fontSize: 10, fill: '#888' }} />
+              <XAxis {...commonXAxis} />
-              <YAxis domain={[990, 1020]} tick={{ fontSize: 10, fill: '#888' }} />
+              <YAxis domain={[990, 1030]} tick={{ fontSize: 10, fill: '#888' }} />
-              <Tooltip contentStyle={{ background: '#1a1a2e', border: '1px solid #333' }} />
+              <Tooltip
-              <Line type="monotone" dataKey="airPressure" stroke="#3b82f6" dot={false} strokeWidth={1.5} />
+                contentStyle={{ background: '#1a1a2e', border: '1px solid #333' }}
+                labelFormatter={formatTickTime}
+                formatter={(v: number) => [v.toFixed(1), 'hPa']}
+              />
+              <Line type="monotone" dataKey="value" stroke="#3b82f6" dot={false} strokeWidth={1.5} />
             </LineChart>
           </ResponsiveContainer>
         </div>
@@ -73,12 +169,16 @@ export function SensorChart({ data, currentTime, startTime }: Props) {
             <span className="chart-demo-label">(DEMO)</span>
           </h4>
           <ResponsiveContainer width="100%" height={80}>
-            <LineChart data={chartData}>
+            <LineChart data={noiseChart}>
               <CartesianGrid strokeDasharray="3 3" stroke="#333" />
-              <XAxis dataKey="time" tick={{ fontSize: 10, fill: '#888' }} />
+              <XAxis {...commonXAxis} />
               <YAxis domain={[0, 140]} tick={{ fontSize: 10, fill: '#888' }} />
-              <Tooltip contentStyle={{ background: '#1a1a2e', border: '1px solid #333' }} />
+              <Tooltip
-              <Line type="monotone" dataKey="noiseLevel" stroke="#f97316" dot={false} strokeWidth={1.5} />
+                contentStyle={{ background: '#1a1a2e', border: '1px solid #333' }}
+                labelFormatter={formatTickTime}
+                formatter={(v: number) => [v.toFixed(1), 'dB']}
+              />
+              <Line type="monotone" dataKey="value" stroke="#f97316" dot={false} strokeWidth={1.5} />
             </LineChart>
           </ResponsiveContainer>
         </div>
@@ -89,12 +189,16 @@ export function SensorChart({ data, currentTime, startTime }: Props) {
             <span className="chart-demo-label">(DEMO)</span>
           </h4>
           <ResponsiveContainer width="100%" height={80}>
-            <LineChart data={chartData}>
+            <LineChart data={radiationChart}>
               <CartesianGrid strokeDasharray="3 3" stroke="#333" />
-              <XAxis dataKey="time" tick={{ fontSize: 10, fill: '#888' }} />
+              <XAxis {...commonXAxis} />
               <YAxis domain={[0, 0.3]} tick={{ fontSize: 10, fill: '#888' }} />
-              <Tooltip contentStyle={{ background: '#1a1a2e', border: '1px solid #333' }} />
+              <Tooltip
-              <Line type="monotone" dataKey="radiationLevel" stroke="#22c55e" dot={false} strokeWidth={1.5} />
+                contentStyle={{ background: '#1a1a2e', border: '1px solid #333' }}
+                labelFormatter={formatTickTime}
+                formatter={(v: number) => [v.toFixed(3), 'μSv/h']}
+              />
+              <Line type="monotone" dataKey="value" stroke="#22c55e" dot={false} strokeWidth={1.5} />
             </LineChart>
           </ResponsiveContainer>
         </div>
@@ -102,10 +206,3 @@ export function SensorChart({ data, currentTime, startTime }: Props) {
     </div>
   );
 }
-
-function formatHour(timestamp: number, startTime: number): string {
-  const hours = (timestamp - startTime) / 3600_000;
-  const h = Math.floor(hours);
-  const m = Math.round((hours - h) * 60);
-  return `${h}:${m.toString().padStart(2, '0')}`;
-}

frontend/src/components/layers/ShipLayer.tsx

@@ -1,4 +1,4 @@
-import { memo, useMemo, useState, useEffect } from 'react';
+import { memo, useMemo, useState, useEffect, useRef, useCallback } from 'react';
 import { Marker, Popup, Source, Layer, useMap } from 'react-map-gl/maplibre';
 import { useTranslation } from 'react-i18next';
 import type { Ship, ShipCategory } from '../../types';
@@ -135,27 +135,63 @@ interface VesselPhotoProps {
   mmsi: string;
   imo?: string;
   shipImagePath?: string | null;
+  shipImageCount?: number;
 }
 
 function toHighRes(path: string): string {
   return path.replace(/_1\.(jpg|jpeg|png)$/i, '_2.$1');
 }
 
-function VesselPhoto({ mmsi, shipImagePath }: VesselPhotoProps) {
+/**
+ * S&P Global 이미지 경로에서 N번째 이미지 URL 생성
+ * 패턴: /shipimg/.../photo_1.jpg → photo_2.jpg (고화질), photo_3.jpg, ...
+ * shipImageCount가 N이면 _1 ~ _N 존재 (각각 _2 고화질 버전)
+ */
+function buildSpgUrls(basePath: string, count: number): string[] {
+  const urls: string[] = [];
+  // 항상 고화질(_2) 우선, count만큼 생성
+  for (let i = 1; i <= Math.max(count, 1); i++) {
+    // basePath 예: /shipimg/.../1234_1.jpg
+    // _1을 _i로 교체 후 고화질로 변환
+    const indexed = basePath.replace(/_1\.(jpg|jpeg|png)$/i, `_${i}.$1`);
+    urls.push(toHighRes(indexed));
+  }
+  return urls;
+}
+
+function VesselPhoto({ mmsi, shipImagePath, shipImageCount }: VesselPhotoProps) {
   const localUrl = LOCAL_SHIP_PHOTOS[mmsi];
 
   const hasSPGlobal = !!shipImagePath;
-  const defaultTab: PhotoSource = hasSPGlobal ? 'spglobal' : 'marinetraffic';
+  // 항상 S&P Global 우선 (모달 열릴 때마다 리셋)
-  const [activeTab, setActiveTab] = useState<PhotoSource>(defaultTab);
+  const [activeTab, setActiveTab] = useState<PhotoSource>(hasSPGlobal ? 'spglobal' : 'marinetraffic');
+  const [spgSlideIdx, setSpgSlideIdx] = useState(0);
+  const [spgErrors, setSpgErrors] = useState<Set<number>>(new Set());
 
-  // S&P Global image error state
+  // 모달이 다른 선박으로 변경될 때 탭/슬라이드 리셋
-  const [spgError, setSpgError] = useState(false);
+  useEffect(() => {
+    setActiveTab(hasSPGlobal ? 'spglobal' : 'marinetraffic');
+    setSpgSlideIdx(0);
+    setSpgErrors(new Set());
+  }, [mmsi, hasSPGlobal]);
+
+  // S&P Global slide URLs
+  const spgUrls = useMemo(
+    () => shipImagePath ? buildSpgUrls(shipImagePath, shipImageCount ?? 1) : [],
+    [shipImagePath, shipImageCount],
+  );
+  const validSpgCount = spgUrls.length;
 
   // MarineTraffic image state (lazy loaded)
   const [mtPhoto, setMtPhoto] = useState<VesselPhotoData | null | undefined>(() => {
     return vesselPhotoCache.has(mmsi) ? vesselPhotoCache.get(mmsi) : undefined;
   });
 
+  useEffect(() => {
+    // 새 선박이면 캐시 확인
+    setMtPhoto(vesselPhotoCache.has(mmsi) ? vesselPhotoCache.get(mmsi) : undefined);
+  }, [mmsi]);
+
   useEffect(() => {
     if (activeTab !== 'marinetraffic') return;
     if (mtPhoto !== undefined) return;
@@ -170,8 +206,8 @@ function VesselPhoto({ mmsi, shipImagePath }: VesselPhotoProps) {
   let currentUrl: string | null = null;
   if (localUrl) {
     currentUrl = localUrl;
-  } else if (activeTab === 'spglobal' && shipImagePath && !spgError) {
+  } else if (activeTab === 'spglobal' && spgUrls.length > 0 && !spgErrors.has(spgSlideIdx)) {
-    currentUrl = toHighRes(shipImagePath);
+    currentUrl = spgUrls[spgSlideIdx];
   } else if (activeTab === 'marinetraffic' && mtPhoto) {
     currentUrl = mtPhoto.url;
   }
@@ -180,15 +216,18 @@ function VesselPhoto({ mmsi, shipImagePath }: VesselPhotoProps) {
   if (localUrl) {
     return (
       <div className="mb-1.5">
+        <div className="vessel-photo-frame w-full rounded overflow-hidden bg-black/30">
           <img src={localUrl} alt="Vessel"
-          className="w-full rounded block"
+            className="w-full h-full object-contain"
             onError={(e) => { (e.target as HTMLImageElement).style.display = 'none'; }}
           />
         </div>
+      </div>
     );
   }
 
-  const noPhoto = (!hasSPGlobal || spgError) && mtPhoto === null;
+  const allSpgFailed = spgUrls.length > 0 && spgUrls.every((_, i) => spgErrors.has(i));
+  const noPhoto = (!hasSPGlobal || allSpgFailed) && mtPhoto === null;
 
   return (
     <div className="mb-1.5">
@@ -212,40 +251,67 @@ function VesselPhoto({ mmsi, shipImagePath }: VesselPhotoProps) {
           MarineTraffic
         </div>
       </div>
+
+      {/* 고정 높이 사진 영역 */}
+      <div className="vessel-photo-frame w-full rounded overflow-hidden bg-black/30 relative">
         {currentUrl ? (
-        <img src={currentUrl} alt="Vessel"
+          <img
-          className="w-full rounded block"
+            key={currentUrl}
-          onError={(e) => {
+            src={currentUrl}
-            const el = e.target as HTMLImageElement;
+            alt="Vessel"
+            className="w-full h-full object-contain"
+            onError={() => {
               if (activeTab === 'spglobal') {
-              setSpgError(true);
+                setSpgErrors(prev => new Set(prev).add(spgSlideIdx));
-              el.style.display = 'none';
-            } else {
-              el.style.display = 'none';
               }
             }}
           />
         ) : noPhoto ? (
-        <div className="text-center py-3 text-kcg-dim text-[10px] border border-dashed border-kcg-border-light rounded">
+          <div className="flex items-center justify-center h-full text-kcg-dim text-[10px]">
             No photo available
           </div>
+        ) : activeTab === 'marinetraffic' && mtPhoto === undefined ? (
+          <div className="flex items-center justify-center h-full text-kcg-dim text-[10px]">
+            Loading...
+          </div>
         ) : (
-        activeTab === 'marinetraffic' && mtPhoto === undefined
+          <div className="flex items-center justify-center h-full text-kcg-dim text-[10px]">
-          ? <div className="text-center py-3 text-kcg-dim text-[10px]">Loading...</div>
-          : <div className="text-center py-3 text-kcg-dim text-[10px] border border-dashed border-kcg-border-light rounded">
             No photo available
           </div>
         )}
+
+        {/* S&P Global 슬라이드 네비게이션 */}
+        {activeTab === 'spglobal' && validSpgCount > 1 && (
+          <>
+            <button
+              type="button"
+              className="absolute left-1 top-1/2 -translate-y-1/2 bg-black/50 text-white rounded-full w-6 h-6 flex items-center justify-center text-xs hover:bg-black/70 transition-colors"
+              onClick={(e) => { e.stopPropagation(); setSpgSlideIdx(i => (i - 1 + validSpgCount) % validSpgCount); }}
+            >
+              &lt;
+            </button>
+            <button
+              type="button"
+              className="absolute right-1 top-1/2 -translate-y-1/2 bg-black/50 text-white rounded-full w-6 h-6 flex items-center justify-center text-xs hover:bg-black/70 transition-colors"
+              onClick={(e) => { e.stopPropagation(); setSpgSlideIdx(i => (i + 1) % validSpgCount); }}
+            >
+              &gt;
+            </button>
+            <div className="absolute bottom-1 left-1/2 -translate-x-1/2 flex gap-1">
+              {spgUrls.map((_, i) => (
+                <span
+                  key={i}
+                  className={`w-1.5 h-1.5 rounded-full ${i === spgSlideIdx ? 'bg-white' : 'bg-white/40'}`}
+                />
+              ))}
+            </div>
+          </>
+        )}
+      </div>
     </div>
   );
 }
 
-function formatCoord(lat: number, lng: number): string {
-  const latDir = lat >= 0 ? 'N' : 'S';
-  const lngDir = lng >= 0 ? 'E' : 'W';
-  return `${Math.abs(lat).toFixed(3)}${latDir}, ${Math.abs(lng).toFixed(3)}${lngDir}`;
-}
-
 // Create triangle SDF image for MapLibre symbol layer
 const TRIANGLE_SIZE = 64;
 
@@ -422,63 +488,168 @@ const ShipPopup = memo(function ShipPopup({ ship, onClose }: { ship: Ship; onClo
   const navyAccent = isMil && ship.flag && NAVY_COLORS[ship.flag] ? NAVY_COLORS[ship.flag] : undefined;
   const flagEmoji = ship.flag ? FLAG_EMOJI[ship.flag] || '' : '';
 
+  // Draggable popup
+  const popupRef = useRef<HTMLDivElement>(null);
+  const dragging = useRef(false);
+  const dragOffset = useRef({ x: 0, y: 0 });
+
+  const onMouseDown = useCallback((e: React.MouseEvent) => {
+    // Only drag from header area
+    const target = e.target as HTMLElement;
+    if (!target.closest('.ship-popup-header')) return;
+    e.preventDefault();
+    dragging.current = true;
+    const popupEl = popupRef.current?.closest('.maplibregl-popup') as HTMLElement | null;
+    if (!popupEl) return;
+    const rect = popupEl.getBoundingClientRect();
+    dragOffset.current = { x: e.clientX - rect.left, y: e.clientY - rect.top };
+    popupEl.style.transition = 'none';
+  }, []);
+
+  useEffect(() => {
+    const onMouseMove = (e: MouseEvent) => {
+      if (!dragging.current) return;
+      const popupEl = popupRef.current?.closest('.maplibregl-popup') as HTMLElement | null;
+      if (!popupEl) return;
+      // Switch to fixed positioning for free drag
+      popupEl.style.transform = 'none';
+      popupEl.style.position = 'fixed';
+      popupEl.style.left = `${e.clientX - dragOffset.current.x}px`;
+      popupEl.style.top = `${e.clientY - dragOffset.current.y}px`;
+    };
+    const onMouseUp = () => { dragging.current = false; };
+    document.addEventListener('mousemove', onMouseMove);
+    document.addEventListener('mouseup', onMouseUp);
+    return () => {
+      document.removeEventListener('mousemove', onMouseMove);
+      document.removeEventListener('mouseup', onMouseUp);
+    };
+  }, []);
+
   return (
     <Popup longitude={ship.lng} latitude={ship.lat}
       onClose={onClose} closeOnClick={false}
       anchor="bottom" maxWidth="340px" className="gl-popup">
-      <div className="min-w-[280px] max-w-[340px] font-mono text-xs">
+      <div ref={popupRef} className="ship-popup-body" onMouseDown={onMouseDown}>
+        {/* Header — draggable handle */}
         <div
-          className="flex items-center gap-2 px-2.5 py-1.5 rounded-t text-white -mx-2.5 -mt-2.5 mb-2"
+          className="ship-popup-header"
-          style={{ background: isMil ? 'var(--kcg-card)' : '#1565c0' }}
+          style={{ background: isMil ? 'var(--kcg-card)' : '#1565c0', cursor: 'grab' }}
         >
-          {flagEmoji && <span className="text-base">{flagEmoji}</span>}
+          {flagEmoji && <span className="text-base leading-none">{flagEmoji}</span>}
-          <strong className="text-[13px] flex-1">{ship.name}</strong>
+          <strong className="ship-popup-name">{ship.name}</strong>
           {navyLabel && (
-            <span
+            <span className="ship-popup-navy-badge" style={{ background: navyAccent || color }}>
-              className="px-1.5 py-px rounded text-[10px] font-bold text-black"
+              {navyLabel}
-              style={{ background: navyAccent || color }}
+            </span>
-            >{navyLabel}</span>
           )}
         </div>
-        <VesselPhoto mmsi={ship.mmsi} imo={ship.imo} shipImagePath={ship.shipImagePath} />
+
-        <div className="flex gap-1 mb-1.5 border-b border-kcg-border-light pb-1">
+        {/* Photo */}
-          <span
+        <VesselPhoto mmsi={ship.mmsi} imo={ship.imo} shipImagePath={ship.shipImagePath} shipImageCount={ship.shipImageCount} />
-            className="px-1.5 py-px rounded text-[10px] font-bold text-white"
+
-            style={{ background: color }}
+        {/* Type tags */}
-          >{t(`mtTypeLabel.${mtType}`, { defaultValue: 'Unknown' })}</span>
+        <div className="ship-popup-tags">
-          <span className="px-1.5 py-px rounded text-[10px] bg-kcg-border text-kcg-text-secondary">
+          <span className="ship-tag ship-tag-primary" style={{ background: color }}>
+            {t(`mtTypeLabel.${mtType}`, { defaultValue: 'Unknown' })}
+          </span>
+          <span className="ship-tag ship-tag-secondary">
             {t(`categoryLabel.${ship.category}`)}
           </span>
           {ship.typeDesc && (
-            <span className="text-kcg-dim text-[10px] leading-[18px]">{ship.typeDesc}</span>
+            <span className="ship-tag ship-tag-dim">{ship.typeDesc}</span>
           )}
         </div>
-        <div className="grid grid-cols-2 gap-x-3 gap-y-0.5 text-[11px]">
+
-          <div>
+        {/* Data grid — paired rows */}
-            <div><span className="text-kcg-muted">{t('popup.mmsi')} : </span>{ship.mmsi}</div>
+        <div className="ship-popup-grid">
-            {ship.callSign && <div><span className="text-kcg-muted">{t('popup.callSign')} : </span>{ship.callSign}</div>}
+          {/* Identity */}
-            {ship.imo && <div><span className="text-kcg-muted">{t('popup.imo')} : </span>{ship.imo}</div>}
+          <div className="ship-popup-row">
-            {ship.status && <div><span className="text-kcg-muted">{t('popup.status')} : </span>{ship.status}</div>}
+            <span className="ship-popup-label">MMSI</span>
-            {ship.length && <div><span className="text-kcg-muted">{t('popup.length')} : </span>{ship.length}m</div>}
+            <span className="ship-popup-value">{ship.mmsi}</span>
-            {ship.width && <div><span className="text-kcg-muted">{t('popup.width')} : </span>{ship.width}m</div>}
-            {ship.draught && <div><span className="text-kcg-muted">{t('popup.draught')} : </span>{ship.draught}m</div>}
           </div>
-          <div>
+          <div className="ship-popup-row">
-            <div><span className="text-kcg-muted">{t('popup.heading')} : </span>{ship.heading.toFixed(1)}&deg;</div>
+            <span className="ship-popup-label">IMO</span>
-            <div><span className="text-kcg-muted">{t('popup.course')} : </span>{ship.course.toFixed(1)}&deg;</div>
+            <span className="ship-popup-value">{ship.imo || '-'}</span>
-            <div><span className="text-kcg-muted">{t('popup.speed')} : </span>{ship.speed.toFixed(1)} kn</div>
+          </div>
-            <div><span className="text-kcg-muted">{t('popup.lat')} : </span>{formatCoord(ship.lat, 0).split(',')[0]}</div>
+
-            <div><span className="text-kcg-muted">{t('popup.lon')} : </span>{formatCoord(0, ship.lng).split(', ')[1] || ship.lng.toFixed(3)}</div>
+          {ship.callSign && (
-            {ship.destination && <div><span className="text-kcg-muted">{t('popup.destination')} : </span>{ship.destination}</div>}
+            <>
-            {ship.eta && <div><span className="text-kcg-muted">{t('popup.eta')} : </span>{new Date(ship.eta).toLocaleString()}</div>}
+              <div className="ship-popup-row">
+                <span className="ship-popup-label">{t('popup.callSign')}</span>
+                <span className="ship-popup-value">{ship.callSign}</span>
+              </div>
+              <div className="ship-popup-row" />
+            </>
+          )}
+
+          {/* Position — paired */}
+          <div className="ship-popup-row">
+            <span className="ship-popup-label">Lat</span>
+            <span className="ship-popup-value">{ship.lat.toFixed(4)}</span>
+          </div>
+          <div className="ship-popup-row">
+            <span className="ship-popup-label">Lon</span>
+            <span className="ship-popup-value">{ship.lng.toFixed(4)}</span>
+          </div>
+
+          {/* Navigation — paired */}
+          <div className="ship-popup-row">
+            <span className="ship-popup-label">HDG</span>
+            <span className="ship-popup-value">{ship.heading.toFixed(1)}&deg;</span>
+          </div>
+          <div className="ship-popup-row">
+            <span className="ship-popup-label">COG</span>
+            <span className="ship-popup-value">{ship.course.toFixed(1)}&deg;</span>
+          </div>
+
+          <div className="ship-popup-row">
+            <span className="ship-popup-label">SOG</span>
+            <span className="ship-popup-value">{ship.speed.toFixed(1)} kn</span>
+          </div>
+          <div className="ship-popup-row">
+            <span className="ship-popup-label">Draught</span>
+            <span className="ship-popup-value">{ship.draught ? `${ship.draught.toFixed(2)}m` : '-'}</span>
+          </div>
+
+          {/* Dimensions — paired */}
+          <div className="ship-popup-row">
+            <span className="ship-popup-label">Length</span>
+            <span className="ship-popup-value">{ship.length ? `${ship.length}m` : '-'}</span>
+          </div>
+          <div className="ship-popup-row">
+            <span className="ship-popup-label">Width</span>
+            <span className="ship-popup-value">{ship.width ? `${ship.width}m` : '-'}</span>
           </div>
         </div>
-        <div className="mt-1.5 text-[9px] text-[#999] text-right">
+
-          {t('popup.lastUpdate')} : {new Date(ship.lastSeen).toLocaleString()}
+        {/* Long-value fields — full width below grid */}
+        {ship.status && (
+          <div className="ship-popup-full-row">
+            <span className="ship-popup-label">Status</span>
+            <span className="ship-popup-value">{ship.status}</span>
           </div>
-        <div className="mt-1 text-[10px] text-right">
+        )}
+        {ship.destination && (
+          <div className="ship-popup-full-row">
+            <span className="ship-popup-label">Dest</span>
+            <span className="ship-popup-value">{ship.destination}</span>
+          </div>
+        )}
+        {ship.eta && (
+          <div className="ship-popup-full-row">
+            <span className="ship-popup-label">ETA</span>
+            <span className="ship-popup-value">{new Date(ship.eta).toLocaleString()}</span>
+          </div>
+        )}
+
+        {/* Footer */}
+        <div className="ship-popup-footer">
+          <span className="ship-popup-timestamp">
+            {t('popup.lastUpdate')}: {new Date(ship.lastSeen).toLocaleString()}
+          </span>
           <a href={`https://www.marinetraffic.com/en/ais/details/ships/mmsi:${ship.mmsi}`}
-            target="_blank" rel="noopener noreferrer" className="text-kcg-accent">
+            target="_blank" rel="noopener noreferrer" className="ship-popup-link">
             MarineTraffic &rarr;
           </a>
         </div>

frontend/src/hooks/useIranData.ts

@@ -1,14 +1,16 @@
-import { useState, useEffect, useMemo, useRef } from 'react';
+import { useState, useEffect, useMemo, useRef, useCallback } from 'react';
-import { fetchEvents, fetchSensorData } from '../services/api';
+import { fetchEvents } from '../services/api';
 import { fetchAircraftFromBackend } from '../services/aircraftApi';
 import { getSampleAircraft } from '../data/sampleAircraft';
 import { fetchSatelliteTLE, propagateAll } from '../services/celestrak';
 import { fetchShips } from '../services/ships';
 import { fetchOsintFeed } from '../services/osint';
 import type { OsintItem } from '../services/osint';
+import { fetchSeismic, fetchPressure } from '../services/sensorApi';
+import type { SeismicDto, PressureDto } from '../services/sensorApi';
 import { propagateAircraft, propagateShips } from '../services/propagation';
 import { getMarineTrafficCategory } from '../utils/marineTraffic';
-import type { GeoEvent, SensorLog, Aircraft, Ship, Satellite, SatellitePosition, AppMode } from '../types';
+import type { GeoEvent, Aircraft, Ship, Satellite, SatellitePosition, AppMode } from '../types';
 
 interface UseIranDataArgs {
   appMode: AppMode;
@@ -28,7 +30,8 @@ interface UseIranDataResult {
   satPositions: SatellitePosition[];
   events: GeoEvent[];
   mergedEvents: GeoEvent[];
-  sensorData: SensorLog[];
+  seismicData: SeismicDto[];
+  pressureData: PressureDto[];
   osintFeed: OsintItem[];
   aircraftByCategory: Record<string, number>;
   militaryCount: number;
@@ -37,6 +40,10 @@ interface UseIranDataResult {
   koreanShipsByCategory: Record<string, number>;
 }
 
+const SENSOR_POLL_INTERVAL = 600_000; // 10 min
+const SHIP_POLL_INTERVAL = 300_000; // 5 min
+const SHIP_STALE_MS = 3_600_000; // 60 min
+
 export function useIranData({
   appMode,
   currentTime,
@@ -47,7 +54,8 @@ export function useIranData({
   dashboardTab,
 }: UseIranDataArgs): UseIranDataResult {
   const [events, setEvents] = useState<GeoEvent[]>([]);
-  const [sensorData, setSensorData] = useState<SensorLog[]>([]);
+  const [seismicData, setSeismicData] = useState<SeismicDto[]>([]);
+  const [pressureData, setPressureData] = useState<PressureDto[]>([]);
   const [baseAircraft, setBaseAircraft] = useState<Aircraft[]>([]);
   const [baseShips, setBaseShips] = useState<Ship[]>([]);
   const [satellites, setSatellites] = useState<Satellite[]>([]);
@@ -55,14 +63,46 @@ export function useIranData({
   const [osintFeed, setOsintFeed] = useState<OsintItem[]>([]);
 
   const satTimeRef = useRef(0);
+  const sensorInitRef = useRef(false);
+  const shipMapRef = useRef<Map<string, Ship>>(new Map());
 
   // Load initial data
   useEffect(() => {
     fetchEvents().then(setEvents).catch(() => {});
-    fetchSensorData().then(setSensorData).catch(() => {});
     fetchSatelliteTLE().then(setSatellites).catch(() => {});
   }, [refreshKey]);
 
+  // Sensor data: initial full 48h load + 10min polling (incremental merge)
+  useEffect(() => {
+    const loadFull = async () => {
+      try {
+        const [seismic, pressure] = await Promise.all([
+          fetchSeismic(), // default 2880 min = 48h
+          fetchPressure(),
+        ]);
+        setSeismicData(seismic);
+        setPressureData(pressure);
+        sensorInitRef.current = true;
+      } catch { /* keep previous */ }
+    };
+
+    const loadIncremental = async () => {
+      if (!sensorInitRef.current) return;
+      try {
+        const [seismic, pressure] = await Promise.all([
+          fetchSeismic(11), // 11 min window (overlap)
+          fetchPressure(11),
+        ]);
+        setSeismicData(prev => mergeSensor(prev, seismic, s => s.usgsId, 2880));
+        setPressureData(prev => mergeSensor(prev, pressure, p => `${p.station}-${p.timestamp}`, 2880));
+      } catch { /* keep previous */ }
+    };
+
+    loadFull();
+    const interval = setInterval(loadIncremental, SENSOR_POLL_INTERVAL);
+    return () => clearInterval(interval);
+  }, [refreshKey]);
+
   // Fetch base aircraft data (LIVE: backend, REPLAY: sample)
   useEffect(() => {
     const load = async () => {
@@ -78,22 +118,45 @@ export function useIranData({
     return () => clearInterval(interval);
   }, [appMode, refreshKey]);
 
-  // Fetch Iran ship data (signal-batch + sample military, 5-min cycle)
+  // Fetch Iran ship data: initial 60min, then 5min polling with 6min window + merge + stale cleanup
+  const mergeShips = useCallback((newShips: Ship[]) => {
+    const map = shipMapRef.current;
+    for (const s of newShips) {
+      map.set(s.mmsi, s);
+    }
+    // Remove stale ships (lastSeen > 60 min ago)
+    const cutoff = Date.now() - SHIP_STALE_MS;
+    for (const [mmsi, ship] of map) {
+      if (ship.lastSeen < cutoff) map.delete(mmsi);
+    }
+    setBaseShips(Array.from(map.values()));
+  }, []);
+
   useEffect(() => {
-    const load = async () => {
+    let initialDone = false;
+    const loadInitial = async () => {
       try {
-        const data = await fetchShips();
+        const data = await fetchShips(60); // 초기: 60분 데이터
         if (data.length > 0) {
+          shipMapRef.current = new Map(data.map(s => [s.mmsi, s]));
           setBaseShips(data);
+          initialDone = true;
         }
-      } catch {
+      } catch { /* keep previous */ }
-        // keep previous data
-      }
     };
-    load();
+
-    const interval = setInterval(load, 300_000);
+    const loadIncremental = async () => {
+      if (!initialDone) return;
+      try {
+        const data = await fetchShips(6); // polling: 6분 데이터
+        if (data.length > 0) mergeShips(data);
+      } catch { /* keep previous */ }
+    };
+
+    loadInitial();
+    const interval = setInterval(loadIncremental, SHIP_POLL_INTERVAL);
     return () => clearInterval(interval);
-  }, [appMode, refreshKey]);
+  }, [appMode, refreshKey, mergeShips]);
 
   // Fetch OSINT feed — live mode (both tabs) + replay mode (iran tab)
   useEffect(() => {
@@ -245,7 +308,8 @@ export function useIranData({
     satPositions,
     events,
     mergedEvents,
-    sensorData,
+    seismicData,
+    pressureData,
     osintFeed,
     aircraftByCategory,
     militaryCount,
@@ -254,3 +318,23 @@ export function useIranData({
     koreanShipsByCategory,
   };
 }
+
+/**
+ * 센서 데이터 병합: 새 데이터를 기존 배열에 추가, 중복 제거, 오래된 데이터 제거
+ */
+function mergeSensor<T extends { timestamp: number }>(
+  existing: T[],
+  incoming: T[],
+  keyFn: (item: T) => string,
+  maxMinutes: number,
+): T[] {
+  const cutoff = Date.now() - maxMinutes * 60_000;
+  const map = new Map<string, T>();
+  for (const item of existing) {
+    if (item.timestamp >= cutoff) map.set(keyFn(item), item);
+  }
+  for (const item of incoming) {
+    if (item.timestamp >= cutoff) map.set(keyFn(item), item);
+  }
+  return Array.from(map.values()).sort((a, b) => a.timestamp - b.timestamp);
+}

frontend/src/hooks/useKoreaData.ts

@@ -1,4 +1,4 @@
-import { useState, useEffect, useMemo, useRef } from 'react';
+import { useState, useEffect, useMemo, useRef, useCallback } from 'react';
 import { fetchAircraftFromBackend } from '../services/aircraftApi';
 import { fetchSatelliteTLEKorea, propagateAll } from '../services/celestrak';
 import { fetchShipsKorea } from '../services/ships';
@@ -30,6 +30,9 @@ interface UseKoreaDataResult {
   militaryCount: number;
 }
 
+const SHIP_POLL_INTERVAL = 300_000; // 5 min
+const SHIP_STALE_MS = 3_600_000; // 60 min
+
 export function useKoreaData({
   currentTime,
   isLive,
@@ -44,6 +47,7 @@ export function useKoreaData({
   const [osintFeed, setOsintFeed] = useState<OsintItem[]>([]);
 
   const satTimeKoreaRef = useRef(0);
+  const shipMapRef = useRef<Map<string, Ship>>(new Map());
 
   // Fetch Korea satellite TLE data
   useEffect(() => {
@@ -61,18 +65,45 @@ export function useKoreaData({
     return () => clearInterval(interval);
   }, [refreshKey]);
 
-  // Fetch Korea region ship data (signal-batch, 4-min cycle)
+  // Ship merge with stale cleanup
+  const mergeShips = useCallback((newShips: Ship[]) => {
+    const map = shipMapRef.current;
+    for (const s of newShips) {
+      map.set(s.mmsi, s);
+    }
+    const cutoff = Date.now() - SHIP_STALE_MS;
+    for (const [mmsi, ship] of map) {
+      if (ship.lastSeen < cutoff) map.delete(mmsi);
+    }
+    setBaseShipsKorea(Array.from(map.values()));
+  }, []);
+
+  // Fetch Korea region ship data: initial 60min, then 5min polling with 6min window
   useEffect(() => {
-    const load = async () => {
+    let initialDone = false;
+    const loadInitial = async () => {
       try {
-        const data = await fetchShipsKorea();
+        const data = await fetchShipsKorea(60); // 초기: 60분 데이터
-        if (data.length > 0) setBaseShipsKorea(data);
+        if (data.length > 0) {
+          shipMapRef.current = new Map(data.map(s => [s.mmsi, s]));
+          setBaseShipsKorea(data);
+          initialDone = true;
+        }
       } catch { /* keep previous */ }
     };
-    load();
+
-    const interval = setInterval(load, 240_000);
+    const loadIncremental = async () => {
+      if (!initialDone) return;
+      try {
+        const data = await fetchShipsKorea(6); // polling: 6분 데이터
+        if (data.length > 0) mergeShips(data);
+      } catch { /* keep previous */ }
+    };
+
+    loadInitial();
+    const interval = setInterval(loadIncremental, SHIP_POLL_INTERVAL);
     return () => clearInterval(interval);
-  }, [refreshKey]);
+  }, [refreshKey, mergeShips]);
 
   // Fetch OSINT feed for Korea tab
   useEffect(() => {

frontend/src/services/sensorApi.ts

@@ -0,0 +1,48 @@
+const API_BASE = '/api/kcg/sensor';
+
+export interface SeismicDto {
+  usgsId: string;
+  magnitude: number;
+  depth: number | null;
+  lat: number;
+  lng: number;
+  place: string;
+  timestamp: number; // epoch ms
+}
+
+export interface PressureDto {
+  station: string;
+  lat: number;
+  lng: number;
+  pressureHpa: number;
+  timestamp: number; // epoch ms
+}
+
+interface SensorResponse<T> {
+  count: number;
+  data: T[];
+}
+
+/**
+ * 지진 이벤트 조회
+ * @param min 조회 범위 (분, 기본 2880=48h)
+ */
+export async function fetchSeismic(min?: number): Promise<SeismicDto[]> {
+  const params = min != null ? `?min=${min}` : '';
+  const res = await fetch(`${API_BASE}/seismic${params}`);
+  if (!res.ok) throw new Error(`seismic API ${res.status}`);
+  const body: SensorResponse<SeismicDto> = await res.json();
+  return body.data;
+}
+
+/**
+ * 기압 데이터 조회
+ * @param min 조회 범위 (분, 기본 2880=48h)
+ */
+export async function fetchPressure(min?: number): Promise<PressureDto[]> {
+  const params = min != null ? `?min=${min}` : '';
+  const res = await fetch(`${API_BASE}/pressure${params}`);
+  if (!res.ok) throw new Error(`pressure API ${res.status}`);
+  const body: SensorResponse<PressureDto> = await res.json();
+  return body.data;
+}

frontend/src/services/ships.ts

@@ -330,9 +330,9 @@ export async function fetchTankers(): Promise<Ship[]> {
 
 // ═══ Main fetch function ═══
 // Tries signal-batch Iran region first, merges with sample military ships
-export async function fetchShips(): Promise<Ship[]> {
+export async function fetchShips(minutes = 10): Promise<Ship[]> {
   const sampleShips = getSampleShips();
-  const real = await fetchShipsFromSignalBatchIran();
+  const real = await fetchShipsFromSignalBatchIran(minutes);
 
   if (real.length > 0) {
     console.log(`signal-batch: ${real.length} vessels in Iran/Hormuz region`);
@@ -715,10 +715,10 @@ function parseSignalBatchVessel(d: RecentPositionDetailDto): Ship {
   };
 }
 
-async function fetchShipsFromSignalBatchIran(): Promise<Ship[]> {
+async function fetchShipsFromSignalBatchIran(minutes = 10): Promise<Ship[]> {
   try {
     const body: RecentPositionDetailRequest = {
-      minutes: 10,
+      minutes,
       coordinates: [
         [IRAN_BOUNDS.minLng, IRAN_BOUNDS.minLat],
         [IRAN_BOUNDS.maxLng, IRAN_BOUNDS.minLat],
@@ -745,10 +745,10 @@ async function fetchShipsFromSignalBatchIran(): Promise<Ship[]> {
   }
 }
 
-async function fetchShipsFromSignalBatch(): Promise<Ship[]> {
+async function fetchShipsFromSignalBatch(minutes = 5): Promise<Ship[]> {
   try {
     const body: RecentPositionDetailRequest = {
-      minutes: 5,
+      minutes,
       coordinates: [
         [KR_BOUNDS.minLng, KR_BOUNDS.minLat],
         [KR_BOUNDS.maxLng, KR_BOUNDS.minLat],
@@ -775,9 +775,9 @@ async function fetchShipsFromSignalBatch(): Promise<Ship[]> {
   }
 }
 
-export async function fetchShipsKorea(): Promise<Ship[]> {
+export async function fetchShipsKorea(minutes = 5): Promise<Ship[]> {
   const sample = getSampleShipsKorea();
-  const real = await fetchShipsFromSignalBatch();
+  const real = await fetchShipsFromSignalBatch(minutes);
   if (real.length > 0) {
     console.log(`signal-batch: ${real.length} vessels in Korea region`);
     const sampleMMSIs = new Set(sample.map(s => s.mmsi));

frontend/vite.config.ts

@@ -90,9 +90,10 @@ export default defineConfig(({ mode }): UserConfig => ({
         },
       },
       '/api/kcg': {
-        target: 'http://localhost:8080',
+        target: 'https://kcg.gc-si.dev',
         changeOrigin: true,
         rewrite: (path) => path.replace(/^\/api\/kcg/, '/api'),
+        secure: true,
       },
       '/signal-batch': {
         target: 'https://wing.gc-si.dev',