MMSI 368475070 · Call sign WDQ9878
Not yet on Master's MateGLOBAL HEIDI flies the American flag — a craft. On AIS she shows as MMSI 368475070, call sign WDQ9878, IMO 8977807. Bring GLOBAL HEIDI aboard the Master's Mate Safety Initiative Network — free, and every captain on it has the others' backs.
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 GLOBAL HEIDI on the map. It hands you the full bridge:
© 2026 Master’s Mate. All rights reserved.