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
No. 203 Dongwon
MMSI 440858000
Not yet on Master's MateFlag
KORLength
56 m
IMO
8717805
AIS reports
2
On the South Korean registry, No. 203 Dongwon is a 56-metre vessel. On AIS she appears as MMSI 440858000, IMO 8717805. No. 203 Dongwon belongs on the Master's Mate Safety Initiative Network, a free safety net shared by boats the world over.
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Is No. 203 Dongwon 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 No. 203 Dongwon 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 No. 203 Dongwon 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 No. 203 Dongwon and switch it all on
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About No. 203 Dongwon
What kind of vessel is No. 203 Dongwon?
No. 203 Dongwon is a vessel flagged to South Korea.
What is No. 203 Dongwon's MMSI?
No. 203 Dongwon's MMSI is 440858000. IMO 8717805.
How big is No. 203 Dongwon?
No. 203 Dongwon is about 56 m long.
Is No. 203 Dongwon on the Master's Mate Safety Initiative Network?
Not yet. If No. 203 Dongwon is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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