SENTINEL 31 — Anti-Pollution · MMSI 316036776

SENTINEL 31 has not broadcast an AIS position for 11 days. The most recent broadcast placed it in the North Pacific Ocean, on 28 Oct 2026, 20:10 UTC. It was sailing from SOOKE to VICTORIA. Vessels stop appearing on terrestrial AIS when they move beyond receiver range, so a gap does not necessarily mean the vessel is inactive.

SENTINEL 31 broadcasts MMSI 316036776. The MMSI is the radio identifier used by AIS; the IMO number stays with the ship for life and does not change with re-flagging or sale.

SENTINEL 31 is classified as a anti-pollution vessel registered under the CA flag. The vessel-type classification is derived from the AIS Type field broadcast by the ship's transponder and full CA flag list at /flag/ca.

MarineRadar shows the latest AIS broadcast from SENTINEL 31 above, with current position, course, speed, and navigation status. Tap "View on map" to centre the live tracker on the vessel and watch its movement update in real time. The same data is available offline-friendly in the iOS and Android apps.

AIS transponders broadcast position every 2 seconds when underway at high speed and up to every 3 minutes at anchor. The position you see refreshes whenever the ship is in range of a coastal AIS receiver or a satellite pass — typically seconds in coastal waters and minutes offshore.

As a anti-pollution, SENTINEL 31 sits in the same design class as the other anti-pollutions listed in the Similar Vessels section of the vessel page.