diff --git a/frontend/src/components/korea/CorrelationPanel.tsx b/frontend/src/components/korea/CorrelationPanel.tsx
index b3be94e..de2d050 100644
--- a/frontend/src/components/korea/CorrelationPanel.tsx
+++ b/frontend/src/components/korea/CorrelationPanel.tsx
@@ -203,7 +203,7 @@ const CorrelationPanel = ({
     <div style={{
       position: 'absolute',
       bottom: historyActive ? 100 : 20,
-      left: 'calc(50% - 275px)',
+      left: 10,
       display: 'flex',
       gap: 6,
       alignItems: 'flex-start',
@@ -212,6 +212,9 @@ const CorrelationPanel = ({
       fontSize: 10,
       color: '#e2e8f0',
       pointerEvents: 'auto',
+      maxWidth: 'calc(100vw - 340px)',
+      overflowX: 'auto',
+      overflowY: 'visible',
     }}>
       {/* 고정: 토글 패널 */}
       <div style={{
@@ -219,6 +222,8 @@ const CorrelationPanel = ({
         border: '1px solid rgba(249,115,22,0.3)',
         borderRadius: 8,
         padding: '8px 10px',
+        position: 'sticky',
+        left: 0,
         minWidth: 165,
         flexShrink: 0,
         boxShadow: '0 4px 16px rgba(0,0,0,0.5)',
@@ -253,18 +258,13 @@ const CorrelationPanel = ({
           const gc = modelItems.filter(c => c.targetType !== 'VESSEL').length;
           return (
             <label key={m.name} style={{ display: 'flex', alignItems: 'center', gap: 4, fontSize: 9, cursor: 'pointer', marginBottom: 3 }}>
-              <input
-                type="checkbox"
-                checked={enabledModels.has(m.name)}
+              <input type="checkbox" checked={enabledModels.has(m.name)}
                 onChange={() => onEnabledModelsChange(prev => {
                   const next = new Set(prev);
-                  if (next.has(m.name)) next.delete(m.name);
-                  else next.add(m.name);
+                  if (next.has(m.name)) next.delete(m.name); else next.add(m.name);
                   return next;
                 })}
-                style={{ accentColor: color, width: 11, height: 11 }}
-                title={m.name}
-              />
+                style={{ accentColor: color, width: 11, height: 11 }} title={m.name} />
               <span style={{ width: 8, height: 8, borderRadius: '50%', background: color, flexShrink: 0 }} />
               <span style={{ color: '#e2e8f0', flex: 1 }}>{m.name}{m.isDefault ? '*' : ''}</span>
               <span style={{ color: '#64748b', fontSize: 8 }}>{vc}⛴{gc}◆</span>
diff --git a/frontend/src/hooks/useGearReplayLayers.ts b/frontend/src/hooks/useGearReplayLayers.ts
index 2019bf0..42a6135 100644
--- a/frontend/src/hooks/useGearReplayLayers.ts
+++ b/frontend/src/hooks/useGearReplayLayers.ts
@@ -95,27 +95,25 @@ export function useGearReplayLayers(
 
     const layers: Layer[] = [];
 
-    // ── Static layers (center trail + dots) ───────────────────────────────
+    // ── 항상 표시: 센터 트레일 + 도트 ──────────────────────────────────
 
-    // Center trail segments (PathLayer) — showTrails 제어
-    if (showTrails) {
-      for (let i = 0; i < centerTrailSegments.length; i++) {
-        const seg = centerTrailSegments[i];
-        if (seg.path.length < 2) continue;
-        layers.push(new PathLayer({
-          id: `replay-center-trail-${i}`,
-          data: [{ path: seg.path }],
-          getPath: (d: { path: [number, number][] }) => d.path,
-          getColor: seg.isInterpolated
-            ? [249, 115, 22, 200]
-            : [251, 191, 36, 180],
-          widthMinPixels: 2,
-        }));
-      }
+    // Center trail segments (PathLayer) — 항상 ON
+    for (let i = 0; i < centerTrailSegments.length; i++) {
+      const seg = centerTrailSegments[i];
+      if (seg.path.length < 2) continue;
+      layers.push(new PathLayer({
+        id: `replay-center-trail-${i}`,
+        data: [{ path: seg.path }],
+        getPath: (d: { path: [number, number][] }) => d.path,
+        getColor: seg.isInterpolated
+          ? [249, 115, 22, 200]
+          : [251, 191, 36, 180],
+        widthMinPixels: 2,
+      }));
     }
 
-    // Center dots (real data only) — showTrails 제어
-    if (showTrails && centerDotsPositions.length > 0) {
+    // Center dots (real data only) — 항상 ON
+    if (centerDotsPositions.length > 0) {
       layers.push(new ScatterplotLayer({
         id: 'replay-center-dots',
         data: centerDotsPositions,
@@ -143,17 +141,54 @@ export function useGearReplayLayers(
     const members = interpolateMemberPositions(state.historyFrames, frameIdx, ct);
     const memberPts: [number, number][] = members.map(m => [m.lon, m.lat]);
 
-    // 1. Identity 모델: 멤버 트레일 + 폴리곤 + 마커 (enabledModels 체크)
+    // ── "항적" 토글: 전체 24h 경로 PathLayer (정적 배경) ─────────────
+    if (showTrails) {
+      // 멤버 전체 항적 (identity)
+      if (enabledModels.has('identity') && memberTripsData.length > 0) {
+        for (const trip of memberTripsData) {
+          if (trip.path.length < 2) continue;
+          layers.push(new PathLayer({
+            id: `replay-member-path-${trip.id}`,
+            data: [{ path: trip.path }],
+            getPath: (d: { path: [number, number][] }) => d.path,
+            getColor: [180, 180, 180, 80], // 낮은 채도 — TripsLayer보다 연하게
+            widthMinPixels: 1,
+          }));
+        }
+      }
+      // 연관 선박 전체 항적 (correlation)
+      if (correlationTripsData.length > 0) {
+        const activeMmsis = new Set<string>();
+        for (const [mn, items] of correlationByModel) {
+          if (!enabledModels.has(mn)) continue;
+          for (const c of items as GearCorrelationItem[]) {
+            if (enabledVessels.has(c.targetMmsi)) activeMmsis.add(c.targetMmsi);
+          }
+        }
+        for (const trip of correlationTripsData) {
+          if (!activeMmsis.has(trip.id) || trip.path.length < 2) continue;
+          layers.push(new PathLayer({
+            id: `replay-corr-path-${trip.id}`,
+            data: [{ path: trip.path }],
+            getPath: (d: { path: [number, number][] }) => d.path,
+            getColor: [100, 140, 200, 60], // 연한 파랑
+            widthMinPixels: 1,
+          }));
+        }
+      }
+    }
+
+    // 1. Identity 모델: TripsLayer + 폴리곤 + 마커 (항상 ON)
     if (enabledModels.has('identity')) {
-      // TripsLayer — member trails (GPU animated, showTrails 제어)
-      if (showTrails && memberTripsData.length > 0) {
+      // TripsLayer — member trails (GPU animated, 항상 ON, 고채도)
+      if (memberTripsData.length > 0) {
         layers.push(new TripsLayer({
           id: 'replay-member-trails',
           data: memberTripsData,
           getPath: d => d.path,
           getTimestamps: d => d.timestamps,
-          getColor: d => d.color,
-          widthMinPixels: 1.5,
+          getColor: [255, 200, 60, 220], // 고채도 노란색 (항적보다 밝게)
+          widthMinPixels: 2,
           fadeTrail: true,
           trailLength: TRAIL_LENGTH_MS,
           currentTime: ct - st,
@@ -177,9 +212,8 @@ export function useGearReplayLayers(
       }
     }
 
-    // 2. Correlation trails (GPU animated, showTrails + enabledModels 체크)
-    if (showTrails && correlationTripsData.length > 0) {
-      // 활성 모델에 속하는 선박의 트랙만 표시
+    // 2. Correlation TripsLayer (GPU animated, 항상 ON, 고채도)
+    if (correlationTripsData.length > 0) {
       const activeMmsis = new Set<string>();
       for (const [mn, items] of correlationByModel) {
         if (!enabledModels.has(mn)) continue;
@@ -194,8 +228,8 @@ export function useGearReplayLayers(
           data: enabledTrips,
           getPath: d => d.path,
           getTimestamps: d => d.timestamps,
-          getColor: d => d.color,
-          widthMinPixels: 2,
+          getColor: [100, 180, 255, 220], // 고채도 파랑 (항적보다 밝게)
+          widthMinPixels: 2.5,
           fadeTrail: true,
           trailLength: TRAIL_LENGTH_MS,
           currentTime: ct - st,
@@ -342,18 +376,19 @@ export function useGearReplayLayers(
     if (shouldLog) {
       const trackHit = corrPositions.filter(p => corrTrackMap.has(p.mmsi)).length;
       const liveHit = corrPositions.length - trackHit;
+      const sampleTrip = memberTripsData[0];
       console.log('[GearReplay] renderFrame:', {
         historyFrames: state.historyFrames.length,
-        correlationByModel: state.correlationByModel.size,
-        modelNames: [...state.correlationByModel.keys()],
+        memberTripsData: memberTripsData.length,
         corrTripsData: correlationTripsData.length,
         corrTrackMap: corrTrackMap.size,
-        enabledModels: [...enabledModels],
-        enabledVessels: enabledVessels.size,
+        showTrails, showLabels,
         relTime: Math.round(relTime / 60000) + 'min',
+        currentTime: Math.round((ct - st) / 60000) + 'min (rel)',
         members: members.length,
         corrPositions: corrPositions.length,
         posSource: `track:${trackHit} live:${liveHit}`,
+        memberTrip0: sampleTrip ? { id: sampleTrip.id, pts: sampleTrip.path.length, tsRange: `${Math.round(sampleTrip.timestamps[0]/60000)}~${Math.round(sampleTrip.timestamps[sampleTrip.timestamps.length-1]/60000)}min` } : 'none',
       });
       // 모델별 상세
       for (const [mn, items] of state.correlationByModel) {