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
HOUUN MARU
Cargo · last seen 34°N 134°E · Jun 2026 · MMSI 431400422 · Call sign JK5411
Not yet on Master's MateType
Cargo
Length
122 m
Beam
27 m
Draft
4.3 m
Call sign
JK5411
IMO
8889763
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
10
HOUUN MARU is a 122-metre cargo ship. HOUUN MARU has 27 metres in the beam and a 4.3 m draft. Look for MMSI 431400422, call sign JK5411, IMO 8889763. HOUUN MARU 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 HOUUN 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
34.4083° N, 133.9119° E
Transiting the Sea of Japan? You're never out there alone.
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Joining the Safety Initiative Network doesn't just put HOUUN 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 HOUUN MARU and switch it all on
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About HOUUN MARU
What kind of vessel is HOUUN MARU?
HOUUN MARU is a Cargo.
Where was HOUUN MARU last seen?
HOUUN MARU was last reported in the Sea of Japan in Jun 2026 on public AIS.
What is HOUUN MARU's MMSI?
HOUUN MARU's MMSI is 431400422. Call sign JK5411. IMO 8889763.
How big is HOUUN MARU?
HOUUN MARU is about 122 m long, 27 m on the beam, drawing 4.3 m.
Is HOUUN MARU on the Master's Mate Safety Initiative Network?
Not yet. If HOUUN MARU is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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