diff --git a/backend/src/vessels/vesselRouter.ts b/backend/src/vessels/vesselRouter.ts
index 3a580b0..d7ca059 100644
--- a/backend/src/vessels/vesselRouter.ts
+++ b/backend/src/vessels/vesselRouter.ts
@@ -1,4 +1,5 @@
 import { Router } from 'express';
+import { requireAuth } from '../auth/authMiddleware.js';
 import { getVesselsInBounds, getAllVessels, getCacheStatus } from './vesselService.js';
 import type { BoundingBox } from './vesselTypes.js';
 
@@ -6,7 +7,7 @@ const vesselRouter = Router();
 
 // POST /api/vessels/in-area
 // 현재 뷰포트 bbox 안의 선박 목록 반환 (메모리 캐시에서 필터링)
-vesselRouter.post('/in-area', (req, res) => {
+vesselRouter.post('/in-area', requireAuth, (req, res) => {
   const { bounds } = req.body as { bounds?: BoundingBox };
 
   if (
@@ -25,13 +26,13 @@ vesselRouter.post('/in-area', (req, res) => {
 });
 
 // GET /api/vessels/all — 캐시된 전체 선박 목록 반환 (검색용)
-vesselRouter.get('/all', (_req, res) => {
+vesselRouter.get('/all', requireAuth, (_req, res) => {
   const vessels = getAllVessels();
   res.json(vessels);
 });
 
 // GET /api/vessels/status — 캐시 상태 확인 (디버그용)
-vesselRouter.get('/status', (_req, res) => {
+vesselRouter.get('/status', requireAuth, (_req, res) => {
   const status = getCacheStatus();
   res.json(status);
 });