MMSI 368420670 · Call sign WDQ3873
Not yet on Master's MateRIKO, a cruising yacht flying the flag of the United States, measures 11 metres on deck. RIKO has a 3-metre beam. On AIS she appears as MMSI 368420670, call sign WDQ3873. RIKO belongs on the Master's Mate Safety Initiative Network, a free safety net shared by boats the world over.
GPS-precise anchor-drag alarms, ETA-calibrated weather routing, worldwide charts, and cruisers watching each other’s backs.
Set her anchor watch — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Joining the Safety Initiative Network doesn't just put RIKO on the map. It hands you the full bridge:
© 2026 Master’s Mate. All rights reserved.