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
KISHOMARU
MMSI 431004772 · Call sign JD3556
Not yet on Master's MateType
Cargo
Flag
JPNLength
75 m
Beam
12 m
Draft
4.7 m
Call sign
JD3556
IMO
9682071
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
19
KISHOMARU, a Japanese merchant ship, measures 75 metres on deck. She has 12 metres in the beam and a draft measuring 4.7 metres. On the registers she's MMSI 431004772, call sign JD3556, IMO 9682071. KISHOMARU 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 KISHOMARU, 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
35.4461° N, 139.7058° 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 KISHOMARU 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 KISHOMARU and switch it all on
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About KISHOMARU
What kind of vessel is KISHOMARU?
KISHOMARU is a Cargo flagged to Japan.
Where was KISHOMARU last seen?
KISHOMARU was last reported in the Sea of Japan in Jun 2026 on public AIS.
What is KISHOMARU's MMSI?
KISHOMARU's MMSI is 431004772. Call sign JD3556. IMO 9682071.
How big is KISHOMARU?
KISHOMARU is about 75 m long, 12 m on the beam, drawing 4.7 m.
Is KISHOMARU on the Master's Mate Safety Initiative Network?
Not yet. If KISHOMARU is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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