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.
Freight Barge
MST 423
U.S. Official No. 646563
Not yet on Master's MateType
Freight Barge
Flag
USALength
59.5 m
Beam
10.7 m
Draft
3 m
First reported
Jun 2026
AIS reports
1
MST 423, a freight barge registered in the United States, measures 59.5 metres on deck. Her hull carries a beam of 10.7 m and a draft of 3 m. Officially she's U.S. official number 646563. Put MST 423 on the Master's Mate Safety Initiative Network — free to claim, with a whole fleet watching out for her.
Free forever · No credit card · for commercial operators
Eyes on MST 423, around the clock.
Real-time AIS, full systems telemetry, distress alerting and worldwide charts — your hull on one dashboard, from anywhere.
Put her on the dashboard — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever MST 423 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 · for commercial operators
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put MST 423 on the map. It hands you the full bridge:
Live AIS & Traffic
See every vessel around you in real time. Closest-approach warnings before they matter.
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.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Anchor Watch
GPS-precise drag alarms that actually wake you — and your whole crew. Sleep through the night.
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 MST 423 and switch it all on
Free to join · nothing to install to start · cancel anytime
About MST 423
What kind of vessel is MST 423?
MST 423 is a Freight Barge flagged to United States of America.
What is MST 423's U.S. Official No.?
MST 423's U.S. Official No. is 646563.
How big is MST 423?
MST 423 is about 59.5 m long, 10.7 m on the beam, drawing 3 m.
Is MST 423 on the Master's Mate Safety Initiative Network?
Not yet. If MST 423 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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