REEF KEEPER — Tug · IMO 9568976

REEF KEEPER was last reported in the Coral Sea, on 7 Nov 2026, 06:26 UTC. It was sailing from CAIRNS to CAIRNS with an ETA of 3 Nov 2026, 22:30 UTC. Its exact coordinates, speed and ETA are shown at the top of this page and refresh from the latest AIS broadcast.

REEF KEEPER broadcasts MMSI 503000239 and is registered as IMO 9568976, with call sign VNZ3608. 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.

REEF KEEPER is classified as a tug vessel registered under the AU 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 AU flag list at /flag/au.

MarineRadar shows the latest AIS broadcast from REEF KEEPER 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.

REEF KEEPER is classed by AMERICAN BUREAU OF SHIPPING, the classification society responsible for inspecting the vessel against safety, structural and operational rules. As a tug, REEF KEEPER 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. REEF KEEPER has a gross tonnage of 1,290 GT.