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
OUYOU MARU
MMSI 431001033 · Call sign JD2961
Not yet on Master's MateFlag
JPNLength
77 m
Beam
12 m
Call sign
JD2961
IMO
9572056
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
18
Out of Japan, OUYOU MARU is a 77-metre craft. Her hull carries 12 metres in the beam. Her papers read MMSI 431001033, call sign JD2961, IMO 9572056. There's a place for OUYOU MARU on the Master's Mate Safety Initiative Network — free, community-driven, like AAA for the ocean.
Free forever · No credit card
Is OUYOU 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 4, 2026
Position
39.0566° N, 141.7249° 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.
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The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put OUYOU 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 OUYOU MARU and switch it all on
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About OUYOU MARU
What kind of vessel is OUYOU MARU?
OUYOU MARU is a vessel flagged to Japan.
Where was OUYOU MARU last seen?
OUYOU MARU was last reported in the Sea of Japan in Jun 2026 on public AIS.
What is OUYOU MARU's MMSI?
OUYOU MARU's MMSI is 431001033. Call sign JD2961. IMO 9572056.
How big is OUYOU MARU?
OUYOU MARU is about 77 m long, 12 m on the beam.
Is OUYOU MARU on the Master's Mate Safety Initiative Network?
Not yet. If OUYOU MARU is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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