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.
Cargo
YUSEI MARU
Cargo · last seen 35°N 135°E · Jun 2026 · MMSI 431006969 · Call sign JD3937
Not yet on Master's MateType
Cargo
Length
76 m
Beam
12 m
Draft
4.8 m
Call sign
JD3937
IMO
9780419
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
8
YUSEI MARU is a 76-metre merchant ship. Her hull carries a beam of 12 m and a draft measuring 4.8 metres. Her registration reads MMSI 431006969, call sign JD3937, IMO 9780419. Add YUSEI MARU to the Master's Mate Safety Initiative Network — free to join, and the fleet keeps an eye out for each other.
Free forever · No credit card · for commercial operators
Eyes on YUSEI MARU, 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 15, 2026
Position
34.6466° N, 135.4644° 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.
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The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put YUSEI MARU 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 YUSEI MARU and switch it all on
Free to join · nothing to install to start · cancel anytime
About YUSEI MARU
What kind of vessel is YUSEI MARU?
YUSEI MARU is a Cargo.
Where was YUSEI MARU last seen?
YUSEI MARU was last reported in the Sea of Japan in Jun 2026 on public AIS.
What is YUSEI MARU's MMSI?
YUSEI MARU's MMSI is 431006969. Call sign JD3937. IMO 9780419.
How big is YUSEI MARU?
YUSEI MARU is about 76 m long, 12 m on the beam, drawing 4.8 m.
Is YUSEI MARU on the Master's Mate Safety Initiative Network?
Not yet. If YUSEI MARU is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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