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

Koyo Maru No. 3

MMSI 431002865

Not yet on Master's Mate

Flag

JPN

Length

67 m

IMO

9606687

AIS reports

Koyo Maru No. 3 is a craft flying the Japanese flag, 67 metres LOA. Find her under MMSI 431002865, IMO 9606687. Add Koyo Maru No. 3 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 Koyo Maru No. 3 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 Koyo Maru No. 3 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 Koyo Maru No. 3 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 Koyo Maru No. 3 and switch it all on

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About Koyo Maru No. 3

What kind of vessel is Koyo Maru No. 3?

Koyo Maru No. 3 is a vessel flagged to Japan.

What is Koyo Maru No. 3's MMSI?

Koyo Maru No. 3's MMSI is 431002865. IMO 9606687.

How big is Koyo Maru No. 3?

Koyo Maru No. 3 is about 67 m long.

Is Koyo Maru No. 3 on the Master's Mate Safety Initiative Network?

Not yet. If Koyo Maru No. 3 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).