HEISCO 21 — Tug · IMO 9473030

HEISCO 21 has not broadcast an AIS position for 178 days. The most recent broadcast placed it in the Persian Gulf, on 12 May 2026, 10:51 UTC. It was sailing from KUWAIT to KUWAIT. Vessels stop appearing on terrestrial AIS when they move beyond receiver range, so a gap does not necessarily mean the vessel is inactive.

HEISCO 21 broadcasts MMSI 447178000 and is registered as IMO 9473030, with call sign 9KFD. 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.

HEISCO 21 is classified as a tug vessel registered under the KW flag. The vessel-type classification is derived from the AIS Type field broadcast by the ship's transponder; full tug fleet at /vessel-type/tug-pilot-vessel and full KW flag list at /flag/kw.

MarineRadar shows the latest AIS broadcast from HEISCO 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 tug, HEISCO 21 sits in the same design class as the other tugs listed in the Similar Vessels section of the vessel page, or in the full tug directory at /vessel-type/tug-pilot-vessel. HEISCO 21 has a gross tonnage of 299 GT.