MAREATHER OB503 — Fishing · MMSI 233820000

MAREATHER OB503 has not broadcast an AIS position for 6 days. The most recent broadcast placed it in the North Atlantic Ocean, on 1 Nov 2026, 20:40 UTC. It was sailing from CANNA to MALLAIG. Vessels stop appearing on terrestrial AIS when they move beyond receiver range, so a gap does not necessarily mean the vessel is inactive.

MAREATHER OB503 broadcasts MMSI 233820000, with call sign MNFD5. 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.

MAREATHER OB503 is classified as a fishing vessel registered under the GB flag. The vessel-type classification is derived from the AIS Type field broadcast by the ship's transponder; full fishing fleet at /vessel-type/fishing and full GB flag list at /flag/gb.

MarineRadar shows the latest AIS broadcast from MAREATHER OB503 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 fishing, MAREATHER OB503 sits in the same design class as the other fishings listed in the Similar Vessels section of the vessel page, or in the full fishing directory at /vessel-type/fishing.