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
Naikaimaru No. 25
MMSI 431011482
Not yet on Master's MateFlag
JPNLength
104.9 m
IMO
9820453
AIS reports
2
Naikaimaru No. 25, a craft flagged in Japan, measures 104.9 metres on deck. She broadcasts as MMSI 431011482, IMO 9820453. Naikaimaru No. 25 belongs on the Master's Mate Safety Initiative Network, a free safety net shared by boats the world over.
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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.
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Wherever Naikaimaru No. 25 roams, you're never out there alone.
Thousands of cruisers on the Master's Mate Network — ready to help the moment something goes wrong.
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Joining the Safety Initiative Network doesn't just put Naikaimaru No. 25 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 Naikaimaru No. 25 and switch it all on
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About Naikaimaru No. 25
What kind of vessel is Naikaimaru No. 25?
Naikaimaru No. 25 is a vessel flagged to Japan.
What is Naikaimaru No. 25's MMSI?
Naikaimaru No. 25's MMSI is 431011482. IMO 9820453.
How big is Naikaimaru No. 25?
Naikaimaru No. 25 is about 104.9 m long.
Is Naikaimaru No. 25 on the Master's Mate Safety Initiative Network?
Not yet. If Naikaimaru No. 25 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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