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.
Unclassified
JOHN B.
U.S. Official No. 280019
Not yet on Master's MateType
Unclassified
Flag
USALength
24.4 m
Beam
7.3 m
Draft
1.3 m
First reported
Jun 2026
AIS reports
1
JOHN B. is an American vessel, 24.4 metres on deck. Her hull carries a 7.3 m beam and a draft measuring 1.3 metres. On the registers she's U.S. official number 280019. JOHN B. is welcome on the Master's Mate Safety Initiative Network — a free, community-run watch where boats look out for one another.
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Wherever JOHN B. roams, you're never out there alone.
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Joining the Safety Initiative Network doesn't just put JOHN B. 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 JOHN B. and switch it all on
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About JOHN B.
What kind of vessel is JOHN B.?
JOHN B. is a Unclassified flagged to United States of America.
What is JOHN B.'s U.S. Official No.?
JOHN B.'s U.S. Official No. is 280019.
How big is JOHN B.?
JOHN B. is about 24.4 m long, 7.3 m on the beam, drawing 1.3 m.
Is JOHN B. on the Master's Mate Safety Initiative Network?
Not yet. If JOHN B. is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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