Master's MateSafety Initiative Network
The Master's Mate Safety Initiative Network (MMSIn) — like AAA for the ocean, but free & community-driven. Cruisers keeping each other safe: anchor-drag & distress alerts, a verified captains directory, and a watch network that has your back.
Vessel
SEA HARMONY
United States of America · last seen 48°N 122°W · Jun 2026 · MMSI 338310878
Not yet on Master's MateFlag
USAIMO
1073741823
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
97
Hailing from the United States, SEA HARMONY is a craft. Officially she's MMSI 338310878. Sign SEA HARMONY up free to the Master's Mate Safety Initiative Network and join a fleet that looks after its own.
Free forever · No credit card
Is SEA HARMONY your boat?
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
Live AIS position · Jun 15, 2026 19:07 UTC
Position
47.6463° N, 122.3115° W
Status
Under way (engine)
Speed
0.0 kn
Course
360°
ETA
06-06 15:18 UTC
Crossing the Salish Sea? You're never out there alone.
Thousands of cruisers on the Master's Mate Network — ready to help the moment something goes wrong.
Free with your claim
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put SEA HARMONY on the map. It hands you the full bridge:
Anchor Watch
GPS-precise drag alarms that actually wake you — and your whole crew. Sleep through the night.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
Live AIS & Traffic
See every vessel around you in real time. Closest-approach warnings before they matter.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Onboard Cameras
Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
Hail Any Captain
A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.
Claim SEA HARMONY and switch it all on
Free to join · nothing to install to start · cancel anytime
About SEA HARMONY
What kind of vessel is SEA HARMONY?
SEA HARMONY is a vessel flagged to United States of America.
Where was SEA HARMONY last seen?
SEA HARMONY was last reported in the Salish Sea in Jun 2026 on public AIS.
What is SEA HARMONY's MMSI?
SEA HARMONY's MMSI is 338310878. IMO 1073741823.
Is SEA HARMONY on the Master's Mate Safety Initiative Network?
Not yet. If SEA HARMONY is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
© 2026 Master’s Mate. All rights reserved.