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Dredging
RYOYOSHIMARU NO8
MMSI 431067000 · Call sign JNQM
Not yet on Master's MateType
Dredging
Flag
JPNLength
56 m
Beam
9 m
Draft
3 m
Call sign
JNQM
IMO
9172911
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
24
RYOYOSHIMARU NO8, a workboat under the Japanese flag, measures 56 metres on deck. She carries a beam measuring 9 metres and a 3 m draft. Officially she's MMSI 431067000, call sign JNQM, IMO 9172911. RYOYOSHIMARU NO8 can join the Master's Mate Safety Initiative Network for free: think of it as a watch network that has every boat's back.
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Built for boats that work — like RYOYOSHIMARU NO8.
Engine & systems telemetry, live AIS, weather and distress alerting for the vessels that earn their keep.
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Last known position · Jun 4, 2026
Position
38.9066° N, 141.5810° 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 RYOYOSHIMARU NO8 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.
Claim RYOYOSHIMARU NO8 and switch it all on
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About RYOYOSHIMARU NO8
What kind of vessel is RYOYOSHIMARU NO8?
RYOYOSHIMARU NO8 is a Dredging flagged to Japan.
Where was RYOYOSHIMARU NO8 last seen?
RYOYOSHIMARU NO8 was last reported in the Sea of Japan in Jun 2026 on public AIS.
What is RYOYOSHIMARU NO8's MMSI?
RYOYOSHIMARU NO8's MMSI is 431067000. Call sign JNQM. IMO 9172911.
How big is RYOYOSHIMARU NO8?
RYOYOSHIMARU NO8 is about 56 m long, 9 m on the beam, drawing 3 m.
Is RYOYOSHIMARU NO8 on the Master's Mate Safety Initiative Network?
Not yet. If RYOYOSHIMARU NO8 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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