GRAMPIAN FORTRESS — SAR · IMO 9709958

GRAMPIAN FORTRESS is currently under way in the North Sea, within the English Channel / North Sea corridor. It is sailing from HEYSHAM to HEYSHAM with an ETA of 22 Oct 2026, 21:30 UTC. Its exact coordinates, speed and ETA are shown at the top of this page and refresh from the latest AIS broadcast.

GRAMPIAN FORTRESS broadcasts MMSI 235113405 and is registered as IMO 9709958, with call sign 2IWR6. 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.

GRAMPIAN FORTRESS is classified as a sar vessel registered under the GB flag. The vessel-type classification is derived from the AIS Type field broadcast by the ship's transponder; full sar fleet at /vessel-type/tug-pilot-vessel and full GB flag list at /flag/gb.

MarineRadar shows the latest AIS broadcast from GRAMPIAN FORTRESS 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 sar, GRAMPIAN FORTRESS sits in the same design class as the other sars listed in the Similar Vessels section of the vessel page, or in the full sar directory at /vessel-type/tug-pilot-vessel. GRAMPIAN FORTRESS has a gross tonnage of 1,771 GT.