U.S. Official No. 1339464
Not yet on Master's MateO-SEA-D, an American cruising boat, measures 10.7 metres on deck. She's built with a 3.4 m beam and a 1.8-metre draft. She's listed under U.S. official number 1339464. O-SEA-D is invited to the free Master's Mate Safety Initiative Network, where cruisers keep each other safe.
Anchor alarms that wake you, a live camera at the dock, and weather you can trust before every run.
Look after her — claim free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Joining the Safety Initiative Network doesn't just put O-SEA-D on the map. It hands you the full bridge:
© 2026 Master’s Mate. All rights reserved.