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.
Unknown
AJS 4
U.S. Official No. 643469
Not yet on Master's MateType
Unknown
Flag
USALength
36.6 m
Beam
9.2 m
Draft
2 m
First reported
Jun 2026
AIS reports
1
AJS 4 flies the American flag — a 36.6-metre craft. She has a beam of 9.2 m and a draft measuring 2 metres. On the registers she's U.S. official number 643469. Put AJS 4 on the Master's Mate Safety Initiative Network — free to claim, with a whole fleet watching out for her.
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Is AJS 4 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 AJS 4 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 AJS 4 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 AJS 4 and switch it all on
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About AJS 4
What kind of vessel is AJS 4?
AJS 4 is a Unknown flagged to United States of America.
What is AJS 4's U.S. Official No.?
AJS 4's U.S. Official No. is 643469.
How big is AJS 4?
AJS 4 is about 36.6 m long, 9.2 m on the beam, drawing 2 m.
Is AJS 4 on the Master's Mate Safety Initiative Network?
Not yet. If AJS 4 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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