DANISH WARSHIP P521 — Military Ops · MMSI 220432000

DANISH WARSHIP P521 has not broadcast an AIS position for 11 days. The most recent broadcast placed it in the Baltic Sea, on 26 Oct 2026, 18:02 UTC. It was sailing from FREDERIKSHAVN to FREDERIKSHAVN. Vessels stop appearing on terrestrial AIS when they move beyond receiver range, so a gap does not necessarily mean the vessel is inactive.

DANISH WARSHIP P521 broadcasts MMSI 220432000, with call sign OVFB. 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.

DANISH WARSHIP P521 is classified as a military ops vessel registered under the DK flag. The vessel-type classification is derived from the AIS Type field broadcast by the ship's transponder; full military ops fleet at /vessel-type/military-special and full DK flag list at /flag/dk.

MarineRadar shows the latest AIS broadcast from DANISH WARSHIP P521 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 military ops, DANISH WARSHIP P521 sits in the same design class as the other military opss listed in the Similar Vessels section of the vessel page, or in the full military ops directory at /vessel-type/military-special.