CHALLENGER — Tanker · IMO 9722792

CHALLENGER has not broadcast an AIS position for 5 days. The most recent broadcast placed it in the Indian Ocean, on 2 Nov 2026, 08:00 UTC. It was sailing from KALBUT to KALBUT. Vessels stop appearing on terrestrial AIS when they move beyond receiver range, so a gap does not necessarily mean the vessel is inactive.

CHALLENGER broadcasts MMSI 311000393 and is registered as IMO 9722792, with call sign C6BX6. 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.

CHALLENGER is classified as a tanker vessel registered under the BS 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 BS flag list at /flag/bs.

MarineRadar shows the latest AIS broadcast from CHALLENGER 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, CHALLENGER 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. CHALLENGER has a gross tonnage of 47,379 GT.