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.
High-speed Craft
HKK31
MMSI 477997139 · Call sign VRS6402
Not yet on Master's MateType
High-speed Craft
Flag
HKGLength
40 m
Beam
11 m
Draft
1.5 m
Call sign
VRS6402
IMO
9981697
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
33
HKK31 is a passenger craft registered in Hong Kong, spanning 40 metres. Below, she has a 11 m beam and a draft measuring 1.5 metres. Her papers read MMSI 477997139, call sign VRS6402, IMO 9981697. Put HKK31 on the Master's Mate Safety Initiative Network — free to claim, with a whole fleet watching out for her.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard HKK31 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
Last known position · Jun 3, 2026
Position
22.3047° N, 114.1566° E
Sailing the South China Sea? 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 HKK31 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 HKK31 and switch it all on
Free to join · nothing to install to start · cancel anytime
About HKK31
What kind of vessel is HKK31?
HKK31 is a High-speed Craft flagged to Hong Kong S.A.R..
Where was HKK31 last seen?
HKK31 was last reported in the South China Sea in Jun 2026 on public AIS.
What is HKK31's MMSI?
HKK31's MMSI is 477997139. Call sign VRS6402. IMO 9981697.
How big is HKK31?
HKK31 is about 40 m long, 11 m on the beam, drawing 1.5 m.
Is HKK31 on the Master's Mate Safety Initiative Network?
Not yet. If HKK31 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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