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

Sider Liu

MMSI 355485000

Not yet on Master's Mate

Flag

PAN

Length

138 m

IMO

9699725

AIS reports

Sider Liu, a Panamanian vessel, measures 138 metres on deck. Find her under MMSI 355485000, IMO 9699725. Give Sider Liu the backing of the Master's Mate Safety Initiative Network — free, and a fleet that has her back.

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Is Sider Liu 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 Sider Liu roams, you're never out there alone.

Thousands of cruisers on the Master's Mate Network — ready to help the moment something goes wrong.

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The most powerful cruising platform ever built — yours, free.

Joining the Safety Initiative Network doesn't just put Sider Liu 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 Sider Liu and switch it all on

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About Sider Liu

What kind of vessel is Sider Liu?

Sider Liu is a vessel flagged to Panama.

What is Sider Liu's MMSI?

Sider Liu's MMSI is 355485000. IMO 9699725.

How big is Sider Liu?

Sider Liu is about 138 m long.

Is Sider Liu on the Master's Mate Safety Initiative Network?

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