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

Great 61

MMSI 566207000

Not yet on Master's Mate

Flag

SGP

Length

199.9 m

IMO

9731365

AIS reports

A Singaporean craft, Great 61 measures 199.9 metres. Her papers read MMSI 566207000, IMO 9731365. Sign Great 61 up free to the Master's Mate Safety Initiative Network and join a fleet that looks after its own.

Free forever · No credit card

Is Great 61 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 Great 61 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 Great 61 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 Great 61 and switch it all on

Free to join · nothing to install to start · cancel anytime

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About Great 61

What kind of vessel is Great 61?

Great 61 is a vessel flagged to Singapore.

What is Great 61's MMSI?

Great 61's MMSI is 566207000. IMO 9731365.

How big is Great 61?

Great 61 is about 199.9 m long.

Is Great 61 on the Master's Mate Safety Initiative Network?

Not yet. If Great 61 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).