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Port Southwest Harbor

Where is the Port?
SOUTHWEST HARBOR is located near the monitored sea lanes. The official UN/LOCODE of this port is USW8S.

How many vessels are in Southwest Harbor port?
There are currently 7 vessels in port and 22 vessels recently departed.

Port map updates in near real-time from AIS snapshots and route transitions. Use the vessel-type filters and names toggle in the map control.


Most frequent incoming origins

No route destination distribution yet.

Most frequent outgoing destinations

No route destination distribution yet.


You can see routes between ports on port-to-port analytics.


Recent vessel arrivals at the port

Latest available transitions/port-call records (UTC). Total: 22
2025-09-15 13:04 UTC · US flagCAPT CHAS PHILBROOK
IMO: 9065223, MMSI: 367342230 | Type:
2025-09-15 13:04 UTC · 338926147
IMO: 0, MMSI: 338926147 | Type:
2025-09-15 13:04 UTC · PRESTIGE
IMO: 0, MMSI: 244125322 | Type:
2025-09-15 13:04 UTC · 368123150
IMO: 0, MMSI: 368123150 | Type:
2025-09-14 13:01 UTC · '369990242'
IMO: 0, MMSI: 369990242 | Type:
2025-09-14 11:46 UTC · CATSBY
IMO: 0, MMSI: 338407756 | Type:
2025-09-14 11:46 UTC · GALLOPIN
IMO: 0, MMSI: 367504290 | Type:
2025-09-14 11:46 UTC · 319176500
IMO: 0, MMSI: 319176500 | Type:
2025-09-14 11:46 UTC · MH flagTANGO
IMO: 0, MMSI: 538071309 | Type:
2025-09-14 11:46 UTC · SV HEAVY METAL
IMO: 0, MMSI: 367536950 | Type:
2025-09-14 11:46 UTC · APRES-SKI 2
IMO: 0, MMSI: 338226858 | Type:
2025-09-14 11:46 UTC · SAGA
IMO: 0, MMSI: 219024921 | Type:
2025-09-14 11:46 UTC · BLACK WATCH
IMO: 0, MMSI: 367099670 | Type:
2025-09-08 15:44 UTC · US flagCg-Abbie-Burgess
IMO: 9155602, MMSI: 368941000 | Type: Buoy Lighthouse Vessel
2025-09-08 15:44 UTC · HERE AND NOW
IMO: 0, MMSI: 367772960 | Type:
2025-09-08 11:47 UTC · GALLOPIN
IMO: 0, MMSI: 367504290 | Type:
2025-09-08 11:47 UTC · '369990242'
IMO: 0, MMSI: 369990242 | Type:
2025-09-08 11:47 UTC · US flagCAPT CHAS PHILBROOK
IMO: 9065223, MMSI: 367342230 | Type:
2025-09-05 23:58 UTC · 'MARIE'
IMO: 0, MMSI: 368025320 | Type:
2025-09-05 23:58 UTC · US flagREBECCA
IMO: 0, MMSI: 338427000 | Type:
2025-09-05 23:58 UTC · MH flagTANGO
IMO: 0, MMSI: 538071309 | Type:
2025-09-05 23:58 UTC · CY flagDOUBLE HAVEN
IMO: 1004792, MMSI: 319382000 | Type: Houseboat

Recent vessel departures from the port

Latest available transitions/port-call records (UTC). Total: 22
2025-09-15 13:04 UTC · US flagCAPT CHAS PHILBROOK
IMO: 9065223, MMSI: 367342230 | Type:
2025-09-15 13:04 UTC · 338926147
IMO: 0, MMSI: 338926147 | Type:
2025-09-15 13:04 UTC · PRESTIGE
IMO: 0, MMSI: 244125322 | Type:
2025-09-15 13:04 UTC · 368123150
IMO: 0, MMSI: 368123150 | Type:
2025-09-14 13:01 UTC · '369990242'
IMO: 0, MMSI: 369990242 | Type:
2025-09-14 11:46 UTC · CATSBY
IMO: 0, MMSI: 338407756 | Type:
2025-09-14 11:46 UTC · GALLOPIN
IMO: 0, MMSI: 367504290 | Type:
2025-09-14 11:46 UTC · 319176500
IMO: 0, MMSI: 319176500 | Type:
2025-09-14 11:46 UTC · MH flagTANGO
IMO: 0, MMSI: 538071309 | Type:
2025-09-14 11:46 UTC · SV HEAVY METAL
IMO: 0, MMSI: 367536950 | Type:
2025-09-14 11:46 UTC · APRES-SKI 2
IMO: 0, MMSI: 338226858 | Type:
2025-09-14 11:46 UTC · SAGA
IMO: 0, MMSI: 219024921 | Type:
2025-09-14 11:46 UTC · BLACK WATCH
IMO: 0, MMSI: 367099670 | Type:
2025-09-08 15:44 UTC · US flagCg-Abbie-Burgess
IMO: 9155602, MMSI: 368941000 | Type: Buoy Lighthouse Vessel
2025-09-08 15:44 UTC · HERE AND NOW
IMO: 0, MMSI: 367772960 | Type:
2025-09-08 11:47 UTC · GALLOPIN
IMO: 0, MMSI: 367504290 | Type:
2025-09-08 11:47 UTC · '369990242'
IMO: 0, MMSI: 369990242 | Type:
2025-09-08 11:47 UTC · US flagCAPT CHAS PHILBROOK
IMO: 9065223, MMSI: 367342230 | Type:
2025-09-05 23:58 UTC · 'MARIE'
IMO: 0, MMSI: 368025320 | Type:
2025-09-05 23:58 UTC · US flagREBECCA
IMO: 0, MMSI: 338427000 | Type:
2025-09-05 23:58 UTC · MH flagTANGO
IMO: 0, MMSI: 538071309 | Type:
2025-09-05 23:58 UTC · CY flagDOUBLE HAVEN
IMO: 1004792, MMSI: 319382000 | Type: Houseboat

Shipping companies (lines) whose ships most often called at the port Southwest Harbor:

No companies linked yet.

Port summary

Port congestion score

Loading congestion data…

Vessel type distribution for the last 3 months:

Unknown · 8 calls (72.7%)
Search and Rescue vessel · 2 calls (18.2%)
Passenger Ship · 1 calls (9.1%)

Most frequent incoming origins

No route destination distribution yet.

Most frequent outgoing destinations

No route destination distribution yet.

Vessels currently in port

Detected by latest AIS in the extended port area, latest 72 hours (deduplicated by vessel).

'369990242'
Type: Unknown | IMO: 0, MMSI: 369990242 | AIS: 2026-03-30 18:03:43 UTC
US flagCAPT CHAS PHILBROOK
Type: Unknown | IMO: 9065223, MMSI: 367342230 | AIS: 2026-03-30 16:04:39 UTC
US flagCOASTAL EXPLORER
Type: Passenger Ship | IMO: 9884849, MMSI: 368106360 | AIS: 2026-03-30 16:04:29 UTC
US flagCG 47311
Type: Search and Rescue vessel | IMO: 0, MMSI: 369493104 | AIS: 2026-03-30 16:03:45 UTC
US flag47263
Type: Search and Rescue vessel | IMO: 0, MMSI: 366999792 | AIS: 2026-03-30 16:03:42 UTC
367426710
Type: Unknown | IMO: 0, MMSI: 367426710 | AIS: 2026-03-30 16:02:37 UTC
338926147
Type: Unknown | IMO: 0, MMSI: 338926147 | AIS: 2026-03-30 14:23:48 UTC

Expected arrivals

Forecast from transitions and inferred destination signals.

No expected arrivals found for next 10 days.

Port in news

Mentions from Topos news feed and spotlights.

No recent port mentions found in Topos news/spotlights.