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

Yue You 903

MMSI 477301300

Not yet on Master's Mate

Flag

HKG

Length

121.8 m

IMO

9449455

AIS reports

Out of Hong Kong, Yue You 903 is a 121.8-metre vessel. Her papers read MMSI 477301300, IMO 9449455. Sign Yue You 903 up free to the Master's Mate Safety Initiative Network and join a fleet that looks after its own.

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Is Yue You 903 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.

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Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers

Wherever Yue You 903 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 Yue You 903 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 Yue You 903 and switch it all on

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About Yue You 903

What kind of vessel is Yue You 903?

Yue You 903 is a vessel flagged to Hong Kong S.A.R..

What is Yue You 903's MMSI?

Yue You 903's MMSI is 477301300. IMO 9449455.

How big is Yue You 903?

Yue You 903 is about 121.8 m long.

Is Yue You 903 on the Master's Mate Safety Initiative Network?

Not yet. If Yue You 903 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).