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

Rokuryu Maru

MMSI 431500553

Not yet on Master's Mate

Flag

JPN

Length

115 m

IMO

9159397

AIS reports

Rokuryu Maru is a Japanese vessel, 115 metres long. Find her under MMSI 431500553, IMO 9159397. Rokuryu Maru belongs on the Master's Mate Safety Initiative Network, a free safety net shared by boats the world over.

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Thousands of cruisers on the Master's Mate Network — ready to help the moment something goes wrong.

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Joining the Safety Initiative Network doesn't just put Rokuryu 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.

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About Rokuryu Maru

What kind of vessel is Rokuryu Maru?

Rokuryu Maru is a vessel flagged to Japan.

What is Rokuryu Maru's MMSI?

Rokuryu Maru's MMSI is 431500553. IMO 9159397.

How big is Rokuryu Maru?

Rokuryu Maru is about 115 m long.

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

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