HYDRA — Dive Vessel · IMO 9034171

HYDRA has not broadcast an AIS position for 3 days. The most recent broadcast placed it in the North Sea, on 4 Nov 2026, 11:51 UTC. It was sailing from BROUWERSDAM ROAD to BROUWERSDAM ROAD. Vessels stop appearing on terrestrial AIS when they move beyond receiver range, so a gap does not necessarily mean the vessel is inactive.

HYDRA broadcasts MMSI 245990000 and is registered as IMO 9034171, with call sign PD2231. 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.

HYDRA is classified as a dive vessel vessel registered under the NL flag. The vessel-type classification is derived from the AIS Type field broadcast by the ship's transponder; full dive vessel fleet at /vessel-type/military-special and full NL flag list at /flag/nl.

MarineRadar shows the latest AIS broadcast from HYDRA 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 dive vessel, HYDRA sits in the same design class as the other dive vessels listed in the Similar Vessels section of the vessel page, or in the full dive vessel directory at /vessel-type/military-special. HYDRA has a gross tonnage of 330 GT.