MMSI 366663880 · Call sign WCO9746
Not yet on Master's MateHailing from the United States, WINNEBAGO II is a vessel. On the registers she's MMSI 366663880, call sign WCO9746. WINNEBAGO II is invited to the free Master's Mate Safety Initiative Network, where cruisers keep each other safe.
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 WINNEBAGO II on the map. It hands you the full bridge:
© 2026 Master’s Mate. All rights reserved.