MMSI 244571000 · Call sign PISA
Not yet on Master's MateISA, a tugboat registered in the Netherlands, measures 24 metres on deck. She's built with 8 metres in the beam and a 3.2 m draft. She's listed under MMSI 244571000, call sign PISA, IMO 9769245. ISA can join the Master's Mate Safety Initiative Network for free: think of it as a watch network that has every boat's back.
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 ISA on the map. It hands you the full bridge:
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