WILLEM SR — Dredger · IMO 8302739

WILLEM SR has not broadcast an AIS position for 165 days. The most recent broadcast placed it in the Baltic Sea, on 27 May 2026, 16:30 UTC. It was sailing from HEL to GDANSK. Vessels stop appearing on terrestrial AIS when they move beyond receiver range, so a gap does not necessarily mean the vessel is inactive.

WILLEM SR broadcasts MMSI 246384000 and is registered as IMO 8302739, with call sign PIWR. 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.

WILLEM SR is classified as a dredger vessel registered under the NL flag. The vessel-type classification is derived from the AIS Type field broadcast by the ship's transponder; full dredger fleet at /vessel-type/military-special and full NL flag list at /flag/nl.

MarineRadar shows the latest AIS broadcast from WILLEM SR 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.

WILLEM SR is classed by GERMANISCHER LLOYD, the classification society responsible for inspecting the vessel against safety, structural and operational rules. As a dredger, WILLEM SR sits in the same design class as the other dredgers listed in the Similar Vessels section of the vessel page, or in the full dredger directory at /vessel-type/military-special. WILLEM SR has a gross tonnage of 994 GT.