MMSI 259020740 · Call sign JXUP
Not yet on Master's MateLOS 137 is a Norwegian harbour workboat, 18 metres long. She has a 5-metre beam. Find her under MMSI 259020740, call sign JXUP. LOS 137 is invited to the free Master's Mate Safety Initiative Network, where cruisers keep each other safe.
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 LOS 137 on the map. It hands you the full bridge:
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