TFF RIO NEGRO — Tug · MMSI 770576345

TFF RIO NEGRO has not broadcast an AIS position for 86 days. The most recent broadcast placed it in the South Atlantic Ocean, on 13 Aug 2026, 01:29 UTC. It was sailing from MONTEVIDEO to MONTEVIDEO. Vessels stop appearing on terrestrial AIS when they move beyond receiver range, so a gap does not necessarily mean the vessel is inactive.

TFF RIO NEGRO broadcasts MMSI 770576345, with call sign CXJW. 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.

TFF RIO NEGRO is classified as a tug vessel registered under the UY 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 UY flag list at /flag/uy.

MarineRadar shows the latest AIS broadcast from TFF RIO NEGRO 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, TFF RIO NEGRO 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.