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
Nippon Maru
MMSI 431302000
Not yet on Master's MateFlag
JPNLength
166.7 m
IMO
8817631
AIS reports
4
Nippon Maru, a Japanese vessel, measures 166.7 metres on deck. On AIS she appears as MMSI 431302000, IMO 8817631. Put Nippon Maru on the Master's Mate Safety Initiative Network — free to claim, with a whole fleet watching out for her.
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Is Nippon Maru 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 Nippon Maru 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 Nippon Maru 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 Nippon Maru and switch it all on
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About Nippon Maru
What kind of vessel is Nippon Maru?
Nippon Maru is a vessel flagged to Japan.
What is Nippon Maru's MMSI?
Nippon Maru's MMSI is 431302000. IMO 8817631.
How big is Nippon Maru?
Nippon Maru is about 166.7 m long.
Is Nippon Maru on the Master's Mate Safety Initiative Network?
Not yet. If Nippon Maru is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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