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

M/Y SEA CLASS

MMSI 339694000 · Call sign 6YTN2

Not yet on Master's Mate

Flag

JAM

Length

52 m

Beam

8 m

Draft

2.5 m

Call sign

6YTN2

IMO

8657732

First reported

Apr 2026

Last reported

Apr 2026

AIS reports

Registered in Jamaica, M/Y SEA CLASS is a 52-metre craft. She's built with a 8 m beam and a 2.5 m draft. Her papers read MMSI 339694000, call sign 6YTN2, IMO 8657732. Join M/Y SEA CLASS to the Master's Mate Safety Initiative Network — free, and built by cruisers for cruisers.

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Is M/Y SEA CLASS 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 M/Y SEA CLASS 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 M/Y SEA CLASS 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 M/Y SEA CLASS and switch it all on

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About M/Y SEA CLASS

What kind of vessel is M/Y SEA CLASS?

M/Y SEA CLASS is a vessel flagged to Jamaica.

What is M/Y SEA CLASS's MMSI?

M/Y SEA CLASS's MMSI is 339694000. Call sign 6YTN2. IMO 8657732.

How big is M/Y SEA CLASS?

M/Y SEA CLASS is about 52 m long, 8 m on the beam, drawing 2.5 m.

Is M/Y SEA CLASS on the Master's Mate Safety Initiative Network?

Not yet. If M/Y SEA CLASS is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).