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
NUNOBIKI MARU
Tug · last seen 35°N 135°E · Jun 2026 · MMSI 431003839 · Call sign JD3399
Not yet on Master's MateType
Tug
Length
34 m
Beam
10 m
Draft
3.8 m
Call sign
JD3399
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
6
NUNOBIKI MARU is a harbour tug, 34 metres long. Her hull carries a beam measuring 10 metres and a draft of 3.8 m. Find her under MMSI 431003839, call sign JD3399. Put NUNOBIKI MARU on the free Master's Mate Safety Initiative Network and keep the working fleet looking out for each other.
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Engine & systems telemetry, live AIS, weather and distress alerting for the vessels that earn their keep.
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Last known position · Jun 15, 2026
Position
34.6825° N, 135.2330° E
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Joining the Safety Initiative Network doesn't just put NUNOBIKI 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
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
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 NUNOBIKI MARU
What kind of vessel is NUNOBIKI MARU?
NUNOBIKI MARU is a Tug.
Where was NUNOBIKI MARU last seen?
NUNOBIKI MARU was last reported in the Sea of Japan in Jun 2026 on public AIS.
What is NUNOBIKI MARU's MMSI?
NUNOBIKI MARU's MMSI is 431003839. Call sign JD3399.
How big is NUNOBIKI MARU?
NUNOBIKI MARU is about 34 m long, 10 m on the beam, drawing 3.8 m.
Is NUNOBIKI MARU on the Master's Mate Safety Initiative Network?
Not yet. If NUNOBIKI MARU is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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