MMSI 368351210 · Call sign WDP4087
Not yet on Master's MateDAVID J COOPER JR, a craft flying the flag of the United States, measures 39 metres on deck. She carries a beam of 12 m and a 2.8 m draft. Officially she's MMSI 368351210, call sign WDP4087. There's a place for DAVID J COOPER JR on the Master's Mate Safety Initiative Network — free, community-driven, like AAA for the ocean.
Your free claim unlocks the most powerful cruising platform ever built — anchor watch, worldwide charts, live AIS, weather routing, and a network of cruisers watching each other’s backs.
Claim this boat — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Joining the Safety Initiative Network doesn't just put DAVID J COOPER JR on the map. It hands you the full bridge:
© 2026 Master’s Mate. All rights reserved.