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.
Offshore Supply Vessel
JO-MAC 2
U.S. Official No. 293909
Not yet on Master's MateType
Offshore Supply Vessel
Flag
USALength
12.5 m
Beam
5.5 m
Draft
1.2 m
First reported
Jun 2026
AIS reports
1
JO-MAC 2, an American utility vessel, measures 12.5 metres on deck. She carries a 5.5 m beam and a 1.2-metre draft. She's listed under U.S. official number 293909. JO-MAC 2 belongs on the Master's Mate Safety Initiative Network, a free safety net shared by boats the world over.
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Built for boats that work — like JO-MAC 2.
Engine & systems telemetry, live AIS, weather and distress alerting for the vessels that earn their keep.
Rig her out — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever JO-MAC 2 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 JO-MAC 2 on the map. It hands you the full bridge:
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
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.
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
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.
Onboard Cameras
Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.
Hail Any Captain
A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.
Claim JO-MAC 2 and switch it all on
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About JO-MAC 2
What kind of vessel is JO-MAC 2?
JO-MAC 2 is a Offshore Supply Vessel flagged to United States of America.
What is JO-MAC 2's U.S. Official No.?
JO-MAC 2's U.S. Official No. is 293909.
How big is JO-MAC 2?
JO-MAC 2 is about 12.5 m long, 5.5 m on the beam, drawing 1.2 m.
Is JO-MAC 2 on the Master's Mate Safety Initiative Network?
Not yet. If JO-MAC 2 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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