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

Otuanga'Ofa

MMSI 570474000

Not yet on Master's Mate

Flag

TON

Length

53 m

IMO

9570357

AIS reports

Otuanga'Ofa is a boat listed on the Tonga registry, measuring 53 metres. On the registers she's MMSI 570474000, IMO 9570357. Add Otuanga'Ofa to the Master's Mate Safety Initiative Network — free to join, and the fleet keeps an eye out for each other.

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Is Otuanga'Ofa 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 Otuanga'Ofa 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 Otuanga'Ofa 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 Otuanga'Ofa and switch it all on

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About Otuanga'Ofa

What kind of vessel is Otuanga'Ofa?

Otuanga'Ofa is a vessel flagged to Tonga.

What is Otuanga'Ofa's MMSI?

Otuanga'Ofa's MMSI is 570474000. IMO 9570357.

How big is Otuanga'Ofa?

Otuanga'Ofa is about 53 m long.

Is Otuanga'Ofa on the Master's Mate Safety Initiative Network?

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