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
Oryong No. 731
MMSI 440920000
Not yet on Master's MateFlag
KORLength
53 m
IMO
8920919
AIS reports
2
Oryong No. 731, a vessel under the South Korean flag, measures 53 metres on deck. Look for MMSI 440920000, IMO 8920919. Bring Oryong No. 731 aboard the Master's Mate Safety Initiative Network — free, and every captain on it has the others' backs.
Free forever · No credit card
Is Oryong No. 731 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 Oryong No. 731 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 Oryong No. 731 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 Oryong No. 731 and switch it all on
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About Oryong No. 731
What kind of vessel is Oryong No. 731?
Oryong No. 731 is a vessel flagged to South Korea.
What is Oryong No. 731's MMSI?
Oryong No. 731's MMSI is 440920000. IMO 8920919.
How big is Oryong No. 731?
Oryong No. 731 is about 53 m long.
Is Oryong No. 731 on the Master's Mate Safety Initiative Network?
Not yet. If Oryong No. 731 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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