RB 405 — Tug · MMSI 273543720

RB 405 was last reported under way in the Sea of Japan, on 7 Nov 2026, 23:14 UTC. It was sailing from VLADIVOSTOK to VLADIVOSTOK with an ETA of 9 Nov 2026, 16:51 UTC. Its exact coordinates, speed and ETA are shown at the top of this page and refresh from the latest AIS broadcast.

RB 405 broadcasts MMSI 273543720, with call sign RB-405 . 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.

RB 405 is classified as a tug vessel registered under the RU 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 RU flag list at /flag/ru.

MarineRadar shows the latest AIS broadcast from RB 405 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, RB 405 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.