HARRIET O — Tug · IMO 7209435

HARRIET O has not broadcast an AIS position for 213 days. The most recent broadcast placed it in the North Pacific Ocean, on 7 Apr 2026, 19:55 UTC. It was sailing from FALSE PASS to REEDSPORT. Vessels stop appearing on terrestrial AIS when they move beyond receiver range, so a gap does not necessarily mean the vessel is inactive.

HARRIET O broadcasts MMSI 368375470 and is registered as IMO 7209435, with call sign WDP6753. 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.

HARRIET O is classified as a tug vessel registered under the US flag. The vessel-type classification is derived from the AIS Type field broadcast by the ship's transponder; full tug fleet at /vessel-type/tug-pilot-vessel and full US flag list at /flag/us.

MarineRadar shows the latest AIS broadcast from HARRIET O 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 tug, HARRIET O sits in the same design class as the other tugs listed in the Similar Vessels section of the vessel page, or in the full tug directory at /vessel-type/tug-pilot-vessel. HARRIET O has a gross tonnage of 336 GT.