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
Sumiyoshi Maru No. 11
MMSI 431300097
Not yet on Master's MateFlag
JPNLength
73 m
IMO
9078737
AIS reports
2
Sumiyoshi Maru No. 11, a boat on the Japan registry, measures 73 metres on deck. She's listed under MMSI 431300097, IMO 9078737. Give Sumiyoshi Maru No. 11 the backing of the Master's Mate Safety Initiative Network — free, and a fleet that has her back.
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Is Sumiyoshi Maru No. 11 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
Live AIS position · Jun 9, 2026 23:43 UTC
Position
34.2329° N, 135.0902° E
Status
Under way (engine)
Speed
11.2 kn
Course
304°
Destination
WAKAYAMA
ETA
06-10 04:00 UTC
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 Sumiyoshi Maru No. 11 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 Sumiyoshi Maru No. 11 and switch it all on
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About Sumiyoshi Maru No. 11
What kind of vessel is Sumiyoshi Maru No. 11?
Sumiyoshi Maru No. 11 is a vessel flagged to Japan.
Where was Sumiyoshi Maru No. 11 last seen?
Sumiyoshi Maru No. 11 was last reported in the Sea of Japan on public AIS.
What is Sumiyoshi Maru No. 11's MMSI?
Sumiyoshi Maru No. 11's MMSI is 431300097. IMO 9078737.
How big is Sumiyoshi Maru No. 11?
Sumiyoshi Maru No. 11 is about 73 m long.
Is Sumiyoshi Maru No. 11 on the Master's Mate Safety Initiative Network?
Not yet. If Sumiyoshi Maru No. 11 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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