United States of America · MMSI 367553830 · Call sign WDG6131
Not yet on Master's MateMP ALPHA flies the American flag — a craft. Officially she's MMSI 367553830, call sign WDG6131. MP ALPHA 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 MP ALPHA on the map. It hands you the full bridge:
© 2026 Master’s Mate. All rights reserved.