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

Hiroshima

MMSI 431000995

Not yet on Master's Mate

Flag

JPN

Length

124 m

IMO

9511765

AIS reports

Hiroshima, a craft wearing Japanese colours, measures 124 metres on deck. Her papers read MMSI 431000995, IMO 9511765. Hiroshima is invited to the free Master's Mate Safety Initiative Network, where cruisers keep each other safe.

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Is Hiroshima 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 Hiroshima 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 Hiroshima 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 Hiroshima and switch it all on

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About Hiroshima

What kind of vessel is Hiroshima?

Hiroshima is a vessel flagged to Japan.

What is Hiroshima's MMSI?

Hiroshima's MMSI is 431000995. IMO 9511765.

How big is Hiroshima?

Hiroshima is about 124 m long.

Is Hiroshima on the Master's Mate Safety Initiative Network?

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