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
HARU MARU NO.6
MMSI 431017687 · Call sign JD4935
Not yet on Master's MateType
Cargo
Flag
JPNLength
180 m
Beam
28 m
Draft
6.3 m
Call sign
JD4935
IMO
9902574
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
18
Registered in Japan, HARU MARU NO.6 is an 180-metre merchant vessel. She's built with 28 metres in the beam and a 6.3 m draft. She's listed under MMSI 431017687, call sign JD4935, IMO 9902574. HARU MARU NO.6 can be part of the Master's Mate Safety Initiative Network at no cost — a community watch that never sleeps.
Free forever · No credit card · for commercial operators
Eyes on HARU MARU NO.6, 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
Live AIS position · Jun 10, 2026 00:30 UTC
Position
34.4824° N, 135.1552° E
Status
Under way (engine)
Speed
20.4 kn
Course
247°
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 HARU MARU NO.6 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 HARU MARU NO.6 and switch it all on
Free to join · nothing to install to start · cancel anytime
About HARU MARU NO.6
What kind of vessel is HARU MARU NO.6?
HARU MARU NO.6 is a Cargo flagged to Japan.
Where was HARU MARU NO.6 last seen?
HARU MARU NO.6 was last reported in the Sea of Japan in Jun 2026 on public AIS.
What is HARU MARU NO.6's MMSI?
HARU MARU NO.6's MMSI is 431017687. Call sign JD4935. IMO 9902574.
How big is HARU MARU NO.6?
HARU MARU NO.6 is about 180 m long, 28 m on the beam, drawing 6.3 m.
Is HARU MARU NO.6 on the Master's Mate Safety Initiative Network?
Not yet. If HARU MARU NO.6 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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