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.
Vessel
Prince Henry
MMSI 477095200
Not yet on Master's MateFlag
HKGLength
120 m
IMO
9614127
AIS reports
2
Out of Hong Kong, Prince Henry is a 120-metre boat. Her registration reads MMSI 477095200, IMO 9614127. The Master's Mate Safety Initiative Network welcomes Prince Henry — free to join, cruiser-run, and always on watch.
Free forever · No credit card
Is Prince Henry your boat?
Your free claim unlocks the most powerful cruising platform ever built — anchor watch, worldwide charts, live AIS, weather routing, and a network of cruisers watching each other’s backs.
Claim this boat — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever Prince Henry 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
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put Prince Henry on the map. It hands you the full bridge:
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.
Live AIS & Traffic
See every vessel around you in real time. Closest-approach warnings before they matter.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Onboard Cameras
Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.
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.
Hail Any Captain
A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.
Claim Prince Henry and switch it all on
Free to join · nothing to install to start · cancel anytime
About Prince Henry
What kind of vessel is Prince Henry?
Prince Henry is a vessel flagged to Hong Kong S.A.R..
What is Prince Henry's MMSI?
Prince Henry's MMSI is 477095200. IMO 9614127.
How big is Prince Henry?
Prince Henry is about 120 m long.
Is Prince Henry on the Master's Mate Safety Initiative Network?
Not yet. If Prince Henry is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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