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

Sungwoo Yj

MMSI 440119040

Not yet on Master's Mate

Flag

KOR

Length

114 m

IMO

9031789

AIS reports

Sungwoo Yj is a boat flagged in South Korea, 114 metres overall. On the registers she's MMSI 440119040, IMO 9031789. Put Sungwoo Yj on the Master's Mate Safety Initiative Network — free to claim, with a whole fleet watching out for her.

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Is Sungwoo Yj 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 Sungwoo Yj 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 Sungwoo Yj 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 Sungwoo Yj and switch it all on

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About Sungwoo Yj

What kind of vessel is Sungwoo Yj?

Sungwoo Yj is a vessel flagged to South Korea.

What is Sungwoo Yj's MMSI?

Sungwoo Yj's MMSI is 440119040. IMO 9031789.

How big is Sungwoo Yj?

Sungwoo Yj is about 114 m long.

Is Sungwoo Yj on the Master's Mate Safety Initiative Network?

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