MMSI 232063623 · Call sign MSTW3
Not yet on Master's MateQUADRA flies the British flag — a 23-metre sailboat. Her hull carries a 5 m beam and a draft of 3 m. Look for MMSI 232063623, call sign MSTW3. Add QUADRA to the Master's Mate Safety Initiative Network — free to join, and the fleet keeps an eye out for each other.
GPS-precise anchor-drag alarms, ETA-calibrated weather routing, worldwide charts, and cruisers watching each other’s backs.
Set her anchor watch — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Joining the Safety Initiative Network doesn't just put QUADRA on the map. It hands you the full bridge:
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