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

Nissho Maru

MMSI 431009602

Not yet on Master's Mate

Flag

JPN

Length

159.9 m

IMO

9781633

AIS reports

On the Japanese registry, Nissho Maru is a 159.9-metre boat. On the registers she's MMSI 431009602, IMO 9781633. Bring Nissho Maru aboard the Master's Mate Safety Initiative Network — free, and every captain on it has the others' backs.

Free forever · No credit card

Is Nissho Maru 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.

Claim this boat — free →

Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers

Wherever Nissho Maru 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 Nissho Maru 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 Nissho Maru and switch it all on

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About Nissho Maru

What kind of vessel is Nissho Maru?

Nissho Maru is a vessel flagged to Japan.

What is Nissho Maru's MMSI?

Nissho Maru's MMSI is 431009602. IMO 9781633.

How big is Nissho Maru?

Nissho Maru is about 159.9 m long.

Is Nissho Maru on the Master's Mate Safety Initiative Network?

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