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.
Tanker
YUHO MARU NO.6
MMSI 431005551 · Call sign JD3708
Not yet on Master's MateType
Tanker
Flag
JPNLength
65 m
Beam
10 m
Draft
3 m
Call sign
JD3708
IMO
9715878
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
28
YUHO MARU NO.6 flies the Japanese flag — a 65-metre tank ship. YUHO MARU NO.6 has 10 metres in the beam and a 3 m draft. Her papers read MMSI 431005551, call sign JD3708, IMO 9715878. YUHO MARU NO.6 is welcome on the Master's Mate Safety Initiative Network — a free, community-run watch where boats look out for one another.
Free forever · No credit card · for commercial operators
Eyes on YUHO MARU NO.6, around the clock.
Real-time AIS, full systems telemetry, distress alerting and worldwide charts — your hull on one dashboard, from anywhere.
Put her on the dashboard — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Last known position · Jun 4, 2026
Position
34.1540° N, 135.1643° E
Transiting 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 · for commercial operators
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put YUHO MARU NO.6 on the map. It hands you the full bridge:
Live AIS & Traffic
See every vessel around you in real time. Closest-approach warnings before they matter.
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.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Anchor Watch
GPS-precise drag alarms that actually wake you — and your whole crew. Sleep through the night.
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 YUHO MARU NO.6 and switch it all on
Free to join · nothing to install to start · cancel anytime
About YUHO MARU NO.6
What kind of vessel is YUHO MARU NO.6?
YUHO MARU NO.6 is a Tanker flagged to Japan.
Where was YUHO MARU NO.6 last seen?
YUHO MARU NO.6 was last reported in the Sea of Japan in Jun 2026 on public AIS.
What is YUHO MARU NO.6's MMSI?
YUHO MARU NO.6's MMSI is 431005551. Call sign JD3708. IMO 9715878.
How big is YUHO MARU NO.6?
YUHO MARU NO.6 is about 65 m long, 10 m on the beam, drawing 3 m.
Is YUHO MARU NO.6 on the Master's Mate Safety Initiative Network?
Not yet. If YUHO MARU NO.6 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
© 2026 Master’s Mate. All rights reserved.