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.
Recreational
Shuang Hsi
MMSI 367608280 · Call sign WDH3531
Not yet on Master's MateType
Recreational
Flag
USALength
11.9 m
Beam
3.7 m
Draft
1.8 m
Call sign
WDH3531
Official No.
941752
AIS reports
1
Registered in the United States, Shuang Hsi is an 11.9-metre recreational boat. Shuang Hsi has a beam measuring 3.7 metres and a 1.8 m draft. Officially she's MMSI 367608280, call sign WDH3531. Put Shuang Hsi 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 recreational captains
Keep Shuang Hsi looked after — even when you’re not aboard.
Anchor alarms that wake you, a live camera at the dock, and weather you can trust before every run.
Look after her — claim free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever Shuang Hsi 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 recreational captains
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put Shuang Hsi 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.
Onboard Cameras
Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
Live AIS & Traffic
See every vessel around you in real time. Closest-approach warnings before they matter.
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 Shuang Hsi and switch it all on
Free to join · nothing to install to start · cancel anytime
About Shuang Hsi
What kind of vessel is Shuang Hsi?
Shuang Hsi is a Recreational flagged to United States of America.
What is Shuang Hsi's MMSI?
Shuang Hsi's MMSI is 367608280. Call sign WDH3531.
How big is Shuang Hsi?
Shuang Hsi is about 11.9 m long, 3.7 m on the beam, drawing 1.8 m.
Is Shuang Hsi on the Master's Mate Safety Initiative Network?
Not yet. If Shuang Hsi is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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