MMSI 367014260 · Call sign WDC3787
Not yet on Master's MateHarmony Isle is an American 11.3-metre pleasure boat. She has a 3.8-metre beam and a draft measuring 2.7 metres. She's on record as MMSI 367014260, call sign WDC3787. Harmony Isle is invited to the free Master's Mate Safety Initiative Network, where cruisers keep each other safe.
Anchor alarms that wake you, a live camera at the dock, and weather you can trust before every run.
Look after her — claim free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Joining the Safety Initiative Network doesn't just put Harmony Isle on the map. It hands you the full bridge:
© 2026 Master’s Mate. All rights reserved.