DEFENDER IV — Military Ops · IMO 9786401

DEFENDER IV is currently under way. It is sailing from ODUDU TERMINAL to YOHO with an ETA of 24 Nov 2026, 09:00 UTC. Its exact coordinates, speed and ETA are shown at the top of this page and refresh from the latest AIS broadcast.

DEFENDER IV broadcasts MMSI 657170800 and is registered as IMO 9786401. 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.

DEFENDER IV is classified as a military ops vessel registered under the NG 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 NG flag list at /flag/ng.

MarineRadar shows the latest AIS broadcast from DEFENDER IV 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, DEFENDER IV 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.