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
O-Sea-D
MMSI 368315370 · Call sign WDN8211
Not yet on Master's MateFlag
USACall sign
WDN8211
Official No.
ny00000
AIS reports
1
O-Sea-D is an American boat. Find her under MMSI 368315370, call sign WDN8211. Sign O-Sea-D 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 O-Sea-D 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
Wherever O-Sea-D roams, 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 O-Sea-D 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 O-Sea-D and switch it all on
Free to join · nothing to install to start · cancel anytime
About O-Sea-D
What kind of vessel is O-Sea-D?
O-Sea-D is a vessel flagged to United States of America.
What is O-Sea-D's MMSI?
O-Sea-D's MMSI is 368315370. Call sign WDN8211.
Is O-Sea-D on the Master's Mate Safety Initiative Network?
Not yet. If O-Sea-D is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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