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

KOHEIMARU NO.1

last seen 33°N 133°E · Jun 2026 · MMSI 431500331

Not yet on Master's Mate

First reported

Jun 2026

Last reported

Jun 2026

AIS reports

KOHEIMARU NO.1 is a vessel. Her papers read MMSI 431500331. Claim KOHEIMARU NO.1 free on the Master's Mate Safety Initiative Network and let nearby cruisers have her back.

Photos of KOHEIMARU NO.1

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Is KOHEIMARU NO.1 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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Live AIS position · Jun 16, 2026 20:11 UTC

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Position

32.9730° N, 132.5101° E

Status

Under way (engine)

Speed

0.1 kn

Course

43°

Wherever KOHEIMARU NO.1 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 KOHEIMARU NO.1 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.

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About KOHEIMARU NO.1

What kind of vessel is KOHEIMARU NO.1?

KOHEIMARU NO.1 is a vessel.

Where was KOHEIMARU NO.1 last seen?

KOHEIMARU NO.1 was last reported in around 33°N 133°E in Jun 2026 on public AIS.

What is KOHEIMARU NO.1's MMSI?

KOHEIMARU NO.1's MMSI is 431500331.

Is KOHEIMARU NO.1 on the Master's Mate Safety Initiative Network?

Not yet. If KOHEIMARU NO.1 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).