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
SEFURIZAN MARU
MMSI 431012115 · Call sign JD4412
Not yet on Master's MateType
Cargo
Flag
JPNLength
113 m
Beam
18 m
Draft
6.3 m
Call sign
JD4412
IMO
9832339
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
19
SEFURIZAN MARU is a merchant ship on the Japan registry, 113 metres on deck. Her hull carries a 18 m beam and a draft measuring 6.3 metres. She's on record as MMSI 431012115, call sign JD4412, IMO 9832339. The Master's Mate Safety Initiative Network welcomes SEFURIZAN MARU — free to join, cruiser-run, and always on watch.
Free forever · No credit card · for commercial operators
Eyes on SEFURIZAN 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 3, 2026
Position
35.5347° N, 139.9014° 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 SEFURIZAN 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 SEFURIZAN MARU and switch it all on
Free to join · nothing to install to start · cancel anytime
About SEFURIZAN MARU
What kind of vessel is SEFURIZAN MARU?
SEFURIZAN MARU is a Cargo flagged to Japan.
Where was SEFURIZAN MARU last seen?
SEFURIZAN MARU was last reported in the Sea of Japan in Jun 2026 on public AIS.
What is SEFURIZAN MARU's MMSI?
SEFURIZAN MARU's MMSI is 431012115. Call sign JD4412. IMO 9832339.
How big is SEFURIZAN MARU?
SEFURIZAN MARU is about 113 m long, 18 m on the beam, drawing 6.3 m.
Is SEFURIZAN MARU on the Master's Mate Safety Initiative Network?
Not yet. If SEFURIZAN MARU is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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