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
HEKISEI MARU
MMSI 431014906 · Call sign JD4751
Not yet on Master's MateType
Cargo
Flag
JPNLength
71 m
Beam
12 m
Draft
3.8 m
Call sign
JD4751
IMO
9880972
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
29
HEKISEI MARU, a Japanese cargo ship, measures 71 metres on deck. HEKISEI MARU has a 12 m beam and a 3.8 m draft. She broadcasts as MMSI 431014906, call sign JD4751, IMO 9880972. HEKISEI MARU belongs on the Master's Mate Safety Initiative Network, a free safety net shared by boats the world over.
Free forever · No credit card · for commercial operators
Eyes on HEKISEI 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 4, 2026
Position
34.2455° N, 135.0984° 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 HEKISEI 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 HEKISEI MARU and switch it all on
Free to join · nothing to install to start · cancel anytime
About HEKISEI MARU
What kind of vessel is HEKISEI MARU?
HEKISEI MARU is a Cargo flagged to Japan.
Where was HEKISEI MARU last seen?
HEKISEI MARU was last reported in the Sea of Japan in Jun 2026 on public AIS.
What is HEKISEI MARU's MMSI?
HEKISEI MARU's MMSI is 431014906. Call sign JD4751. IMO 9880972.
How big is HEKISEI MARU?
HEKISEI MARU is about 71 m long, 12 m on the beam, drawing 3.8 m.
Is HEKISEI MARU on the Master's Mate Safety Initiative Network?
Not yet. If HEKISEI MARU is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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