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
Propane Maru No. 3
MMSI 431003365
Not yet on Master's MateFlag
JPNLength
67 m
IMO
9632674
AIS reports
2
Propane Maru No. 3, a vessel under the Japanese flag, measures 67 metres on deck. Her registration reads MMSI 431003365, IMO 9632674. Give Propane Maru No. 3 the backing of the Master's Mate Safety Initiative Network — free, and a fleet that has her back.
Free forever · No credit card
Is Propane 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.
Claim this boat — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever Propane 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 Propane 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 Propane Maru No. 3 and switch it all on
Free to join · nothing to install to start · cancel anytime
About Propane Maru No. 3
What kind of vessel is Propane Maru No. 3?
Propane Maru No. 3 is a vessel flagged to Japan.
What is Propane Maru No. 3's MMSI?
Propane Maru No. 3's MMSI is 431003365. IMO 9632674.
How big is Propane Maru No. 3?
Propane Maru No. 3 is about 67 m long.
Is Propane Maru No. 3 on the Master's Mate Safety Initiative Network?
Not yet. If Propane Maru No. 3 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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