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 (Inspected)
MV Hiyu
MMSI 366772770 · Call sign WX9133
Not yet on Master's MateType
Passenger (Inspected)
Flag
USALength
49.4 m
Beam
19.2 m
Draft
4.8 m
Call sign
WX9133
IMO
8645301
Official No.
508159
AIS reports
3
An American passenger boat, MV Hiyu measures 49.4 metres. She carries a beam measuring 19.2 metres and a 4.8 m draft. Find her under MMSI 366772770, call sign WX9133, IMO 8645301. MV Hiyu carries passengers; the free Master's Mate Safety Initiative Network helps carry the watch, with distress alerting and a network nearby.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard MV Hiyu 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
Wherever MV Hiyu roams, 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 passenger & charter operators
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put MV Hiyu 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 MV Hiyu and switch it all on
Free to join · nothing to install to start · cancel anytime
About MV Hiyu
What kind of vessel is MV Hiyu?
MV Hiyu is a Passenger (Inspected) flagged to United States of America.
What is MV Hiyu's MMSI?
MV Hiyu's MMSI is 366772770. Call sign WX9133. IMO 8645301.
How big is MV Hiyu?
MV Hiyu is about 49.4 m long, 19.2 m on the beam, drawing 4.8 m.
Is MV Hiyu on the Master's Mate Safety Initiative Network?
Not yet. If MV Hiyu is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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