ROCK — Tanker · IMO 9288356

ROCK has not broadcast an AIS position for 16 days. The most recent broadcast placed it in the Sea of Japan, on 21 Oct 2026, 14:48 UTC. It was sailing from TAICHUNG to NAKHODKA. Vessels stop appearing on terrestrial AIS when they move beyond receiver range, so a gap does not necessarily mean the vessel is inactive.

ROCK broadcasts MMSI 314845000 and is registered as IMO 9288356, with call sign 8PYO2. 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.

ROCK is classified as a tanker vessel registered under the BB flag. The vessel-type classification is derived from the AIS Type field broadcast by the ship's transponder; full tanker fleet at /vessel-type/tanker and full BB flag list at /flag/bb.

MarineRadar shows the latest AIS broadcast from ROCK 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.

ROCK is classed by DET NORSKE VERITAS, the classification society responsible for inspecting the vessel against safety, structural and operational rules. As a tanker, ROCK sits in the same design class as the other tankers listed in the Similar Vessels section of the vessel page, or in the full tanker directory at /vessel-type/tanker. ROCK has a gross tonnage of 42,172 GT.