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
KATURAGI MARU
Tanker · last seen 34°N 134°E · Jun 2026 · MMSI 431010743 · Call sign JD4309
Not yet on Master's MateType
Tanker
Length
56 m
Beam
9 m
Draft
3 m
Call sign
JD4309
IMO
9809198
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
7
KATURAGI MARU is a tanker, 56 metres on deck. She has a 9-metre beam and a draft measuring 3 metres. On the registers she's MMSI 431010743, call sign JD4309, IMO 9809198. Join KATURAGI MARU to the Master's Mate Safety Initiative Network — free, and built by cruisers for cruisers.
Free forever · No credit card · for commercial operators
Eyes on KATURAGI 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
34.4141° N, 134.2951° 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 KATURAGI 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 KATURAGI MARU and switch it all on
Free to join · nothing to install to start · cancel anytime
About KATURAGI MARU
What kind of vessel is KATURAGI MARU?
KATURAGI MARU is a Tanker.
Where was KATURAGI MARU last seen?
KATURAGI MARU was last reported in the Sea of Japan in Jun 2026 on public AIS.
What is KATURAGI MARU's MMSI?
KATURAGI MARU's MMSI is 431010743. Call sign JD4309. IMO 9809198.
How big is KATURAGI MARU?
KATURAGI MARU is about 56 m long, 9 m on the beam, drawing 3 m.
Is KATURAGI MARU on the Master's Mate Safety Initiative Network?
Not yet. If KATURAGI MARU 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.