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.
Tug
AOBAMARU
MMSI 431003385 · Call sign JD3334
Not yet on Master's MateType
Tug
Flag
JPNLength
38 m
Beam
9 m
Draft
3 m
Call sign
JD3334
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
6
AOBAMARU, a tug flying the flag of Japan, measures 38 metres on deck. Her hull carries 9 metres in the beam and a draft measuring 3 metres. She broadcasts as MMSI 431003385, call sign JD3334. Claim AOBAMARU free on the Master's Mate Safety Initiative Network and let nearby cruisers have her back.
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Built for boats that work — like AOBAMARU.
Engine & systems telemetry, live AIS, weather and distress alerting for the vessels that earn their keep.
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Last known position · Jun 3, 2026
Position
35.4673° N, 139.7379° E
Working the Sea of Japan? You're never out there alone.
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Joining the Safety Initiative Network doesn't just put AOBAMARU 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
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
Onboard Cameras
Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.
Hail Any Captain
A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.
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About AOBAMARU
What kind of vessel is AOBAMARU?
AOBAMARU is a Tug flagged to Japan.
Where was AOBAMARU last seen?
AOBAMARU was last reported in the Sea of Japan in Jun 2026 on public AIS.
What is AOBAMARU's MMSI?
AOBAMARU's MMSI is 431003385. Call sign JD3334.
How big is AOBAMARU?
AOBAMARU is about 38 m long, 9 m on the beam, drawing 3 m.
Is AOBAMARU on the Master's Mate Safety Initiative Network?
Not yet. If AOBAMARU is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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