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

Tien Shan

MMSI 477057200

Not yet on Master's Mate

Flag

HKG

Length

325 m

IMO

9724831

AIS reports

Tien Shan, a craft under the Hong Kong flag, measures 325 metres on deck. On the registers she's MMSI 477057200, IMO 9724831. Join Tien Shan to the Master's Mate Safety Initiative Network — free, and built by cruisers for cruisers.

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Is Tien Shan 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 Tien Shan 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 Tien Shan 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 Tien Shan and switch it all on

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About Tien Shan

What kind of vessel is Tien Shan?

Tien Shan is a vessel flagged to Hong Kong S.A.R..

What is Tien Shan's MMSI?

Tien Shan's MMSI is 477057200. IMO 9724831.

How big is Tien Shan?

Tien Shan is about 325 m long.

Is Tien Shan on the Master's Mate Safety Initiative Network?

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