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
KEIYO MARU
last seen 35°N 135°E · Jun 2026 · MMSI 431022642
Not yet on Master's MateFirst reported
Jun 2026
Last reported
Jun 2026
AIS reports
5
KEIYO MARU is a vessel. She broadcasts as MMSI 431022642. Claim KEIYO MARU free on the Master's Mate Safety Initiative Network and let nearby cruisers have her back.
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Is KEIYO 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
Last known position · Jun 15, 2026
Position
34.7797° N, 134.6372° E
Crossing the Sea of Japan? 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 KEIYO 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 KEIYO MARU and switch it all on
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About KEIYO MARU
What kind of vessel is KEIYO MARU?
KEIYO MARU is a vessel.
Where was KEIYO MARU last seen?
KEIYO MARU was last reported in the Sea of Japan in Jun 2026 on public AIS.
What is KEIYO MARU's MMSI?
KEIYO MARU's MMSI is 431022642.
Is KEIYO MARU on the Master's Mate Safety Initiative Network?
Not yet. If KEIYO MARU is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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