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.
Passenger
HAMAYUU
MMSI 431446000 · Call sign JM6512
Not yet on Master's MateType
Passenger
Flag
JPNLength
162 m
Beam
24 m
Draft
5.6 m
Call sign
JM6512
IMO
9184562
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
24
On the Japanese registry, HAMAYUU is a 162-metre passenger craft. Below, she has a 24 m beam and a draft measuring 5.6 metres. On the registers she's MMSI 431446000, call sign JM6512, IMO 9184562. The Master's Mate Safety Initiative Network welcomes HAMAYUU — free to join, cruiser-run, and always on watch.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard HAMAYUU safe.
Distress alerting, live AIS, onboard monitoring and weather routing — the safety stack for boats that carry people.
Switch on the safety stack — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Live AIS position · Jun 9, 2026 12:54 UTC
Position
34.1104° N, 130.6885° E
Status
Under way (engine)
Speed
8.0 kn
Course
307°
Sailing 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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Joining the Safety Initiative Network doesn't just put HAMAYUU on the map. It hands you the full bridge:
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
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.
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.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
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 HAMAYUU and switch it all on
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About HAMAYUU
What kind of vessel is HAMAYUU?
HAMAYUU is a Passenger flagged to Japan.
Where was HAMAYUU last seen?
HAMAYUU was last reported in the Sea of Japan in Jun 2026 on public AIS.
What is HAMAYUU's MMSI?
HAMAYUU's MMSI is 431446000. Call sign JM6512. IMO 9184562.
How big is HAMAYUU?
HAMAYUU is about 162 m long, 24 m on the beam, drawing 5.6 m.
Is HAMAYUU on the Master's Mate Safety Initiative Network?
Not yet. If HAMAYUU is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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