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
SHINTAIEI MARU
MMSI 431006906 · Call sign JD3904
Not yet on Master's MateType
Cargo
Flag
JPNLength
75 m
Beam
12 m
Draft
4.7 m
Call sign
JD3904
IMO
9774018
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
22
A Japanese ocean freighter, SHINTAIEI MARU measures 75 metres. Her hull carries a 12-metre beam and a draft of 4.7 m. On AIS she shows as MMSI 431006906, call sign JD3904, IMO 9774018. SHINTAIEI MARU is invited to the free Master's Mate Safety Initiative Network, where cruisers keep each other safe.
Free forever · No credit card · for commercial operators
Eyes on SHINTAIEI 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 2, 2026
Position
35.9259° N, 140.6539° E
Transiting the Sea of Japan? You're never out there alone.
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The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put SHINTAIEI 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 SHINTAIEI MARU and switch it all on
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About SHINTAIEI MARU
What kind of vessel is SHINTAIEI MARU?
SHINTAIEI MARU is a Cargo flagged to Japan.
Where was SHINTAIEI MARU last seen?
SHINTAIEI MARU was last reported in the Sea of Japan in Jun 2026 on public AIS.
What is SHINTAIEI MARU's MMSI?
SHINTAIEI MARU's MMSI is 431006906. Call sign JD3904. IMO 9774018.
How big is SHINTAIEI MARU?
SHINTAIEI MARU is about 75 m long, 12 m on the beam, drawing 4.7 m.
Is SHINTAIEI MARU on the Master's Mate Safety Initiative Network?
Not yet. If SHINTAIEI MARU is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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