HYDROVAC 21 — Tanker · MMSI 244700198

HYDROVAC 21 was last reported moored in the North Sea, within the English Channel / North Sea corridor, on 6 Nov 2026, 09:27 UTC. It was sailing from DORDRECHT to DORDRECHT with an ETA of 5 Nov 2026, 10:15 UTC. Its exact coordinates, speed and ETA are shown at the top of this page and refresh from the latest AIS broadcast.

HYDROVAC 21 broadcasts MMSI 244700198, with call sign PD3723. 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.

HYDROVAC 21 is classified as a tanker vessel registered under the NL 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 NL flag list at /flag/nl.

MarineRadar shows the latest AIS broadcast from HYDROVAC 21 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 tanker, HYDROVAC 21 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.