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
Han Ei Maru
MMSI 431007188
Not yet on Master's MateFlag
JPNLength
119.9 m
IMO
9739109
AIS reports
2
On the Japanese registry, Han Ei Maru is an 119.9-metre boat. She broadcasts as MMSI 431007188, IMO 9739109. Add Han Ei Maru to the Master's Mate Safety Initiative Network — free to join, and the fleet keeps an eye out for each other.
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Is Han Ei 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
Live AIS position · Jun 9, 2026 11:41 UTC
Position
34.0891° N, 134.9765° E
Status
Under way (engine)
Speed
11.9 kn
Course
182°
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 Han Ei 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 Han Ei Maru and switch it all on
Free to join · nothing to install to start · cancel anytime
About Han Ei Maru
What kind of vessel is Han Ei Maru?
Han Ei Maru is a vessel flagged to Japan.
Where was Han Ei Maru last seen?
Han Ei Maru was last reported in the Sea of Japan on public AIS.
What is Han Ei Maru's MMSI?
Han Ei Maru's MMSI is 431007188. IMO 9739109.
How big is Han Ei Maru?
Han Ei Maru is about 119.9 m long.
Is Han Ei Maru on the Master's Mate Safety Initiative Network?
Not yet. If Han Ei Maru is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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