MMSI 246384000 · Call sign PIWR
Not yet on Master's MateWILLEM SR is a Dutch workboat — 77 metres overall. WILLEM SR has a beam measuring 10 metres and a 3.8 m draft. She's listed under MMSI 246384000, call sign PIWR, IMO 8302739. It's free to add WILLEM SR to the Master's Mate Safety Initiative Network — like AAA for the ocean, run by the cruisers who use it.
Engine & systems telemetry, live AIS, weather and distress alerting for the vessels that earn their keep.
Rig her out — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Joining the Safety Initiative Network doesn't just put WILLEM SR on the map. It hands you the full bridge:
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