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
Hai Yang Shi You 645
MMSI 413488470
Not yet on Master's MateFlag
CHNLength
73.8 m
IMO
9776274
AIS reports
2
A Chinese craft, Hai Yang Shi You 645 measures 73.8 metres. Officially she's MMSI 413488470, IMO 9776274. Add Hai Yang Shi You 645 to the Master's Mate Safety Initiative Network — free to join, and the fleet keeps an eye out for each other.
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Is Hai Yang Shi You 645 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 Hai Yang Shi You 645 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 Hai Yang Shi You 645 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 Hai Yang Shi You 645 and switch it all on
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About Hai Yang Shi You 645
What kind of vessel is Hai Yang Shi You 645?
Hai Yang Shi You 645 is a vessel flagged to China.
What is Hai Yang Shi You 645's MMSI?
Hai Yang Shi You 645's MMSI is 413488470. IMO 9776274.
How big is Hai Yang Shi You 645?
Hai Yang Shi You 645 is about 73.8 m long.
Is Hai Yang Shi You 645 on the Master's Mate Safety Initiative Network?
Not yet. If Hai Yang Shi You 645 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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