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

Seaspan Harrier

MMSI 477159600

Not yet on Master's Mate

Flag

HKG

Length

330 m

IMO

9793923

AIS reports

Out of Hong Kong, Seaspan Harrier is a 330-metre vessel. On AIS she shows as MMSI 477159600, IMO 9793923. Sign Seaspan Harrier up free to the Master's Mate Safety Initiative Network and join a fleet that looks after its own.

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Is Seaspan Harrier 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 Seaspan Harrier 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 Seaspan Harrier 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 Seaspan Harrier and switch it all on

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About Seaspan Harrier

What kind of vessel is Seaspan Harrier?

Seaspan Harrier is a vessel flagged to Hong Kong S.A.R..

What is Seaspan Harrier's MMSI?

Seaspan Harrier's MMSI is 477159600. IMO 9793923.

How big is Seaspan Harrier?

Seaspan Harrier is about 330 m long.

Is Seaspan Harrier on the Master's Mate Safety Initiative Network?

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