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

JCG Sōya

MMSI 431800020

Not yet on Master's Mate

Flag

JPN

Length

98.6 m

IMO

7718668

AIS reports

JCG Sōya is a vessel hailing from Japan, 98.6 metres on deck. Her registration reads MMSI 431800020, IMO 7718668. Give JCG Sōya the backing of the Master's Mate Safety Initiative Network — free, and a fleet that has her back.

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Is JCG Sōya 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 JCG Sōya 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 JCG Sōya 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 JCG Sōya and switch it all on

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About JCG Sōya

What kind of vessel is JCG Sōya?

JCG Sōya is a vessel flagged to Japan.

What is JCG Sōya's MMSI?

JCG Sōya's MMSI is 431800020. IMO 7718668.

How big is JCG Sōya?

JCG Sōya is about 98.6 m long.

Is JCG Sōya on the Master's Mate Safety Initiative Network?

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