U.S. Official No. 558935
Not yet on Master's MateOut of the United States, SU SEA is a 12.7-metre offshore fishing boat. She's built with a 4.3-metre beam and a 1.9-metre draft. She's on record as U.S. official number 558935. SU SEA is invited to the free Master's Mate Safety Initiative Network, where cruisers keep each other safe.
Live AIS traffic, weather you can plan around, engine & systems telemetry, and a distress mesh that reaches nearby boats.
Keep the fleet in sight — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Joining the Safety Initiative Network doesn't just put SU SEA on the map. It hands you the full bridge:
© 2026 Master’s Mate. All rights reserved.