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Tug
KAIRYO MARU
MMSI 431014724 · Call sign JD4747
Not yet on Master's MateType
Tug
Flag
JPNLength
36 m
Beam
12 m
Draft
3.5 m
Call sign
JD4747
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
51
A Japanese harbour tug, KAIRYO MARU measures 36 metres. Below, she has a beam measuring 12 metres and a draft of 3.5 m. On AIS she shows as MMSI 431014724, call sign JD4747. KAIRYO MARU belongs on the Master's Mate Safety Initiative Network, a free safety net shared by boats the world over.
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Live AIS position · Jun 9, 2026 22:03 UTC
Position
39.7671° N, 140.0484° E
Status
Under way (engine)
Speed
0.0 kn
Course
179°
Destination
AFG
ETA
01-25 20:00 UTC
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Joining the Safety Initiative Network doesn't just put KAIRYO MARU on the map. It hands you the full bridge:
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
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.
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
Anchor Watch
GPS-precise drag alarms that actually wake you — and your whole crew. Sleep through the night.
Worldwide Charts
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Onboard Cameras
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Hail Any Captain
A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.
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About KAIRYO MARU
What kind of vessel is KAIRYO MARU?
KAIRYO MARU is a Tug flagged to Japan.
Where was KAIRYO MARU last seen?
KAIRYO MARU was last reported in the Sea of Japan in Jun 2026 on public AIS.
What is KAIRYO MARU's MMSI?
KAIRYO MARU's MMSI is 431014724. Call sign JD4747.
How big is KAIRYO MARU?
KAIRYO MARU is about 36 m long, 12 m on the beam, drawing 3.5 m.
Is KAIRYO MARU on the Master's Mate Safety Initiative Network?
Not yet. If KAIRYO MARU is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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