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
LBL 4B
U.S. Official No. 1229171
Not yet on Master's MateType
Freight Barge
Flag
USALength
61 m
Beam
10.7 m
Draft
4 m
First reported
Jun 2026
AIS reports
1
LBL 4B is a barge listed on the the United States registry, 61 metres from stem to stern. LBL 4B has a 10.7 m beam and a 4-metre draft. She's on record as U.S. official number 1229171. Bring LBL 4B aboard the Master's Mate Safety Initiative Network — free, and every captain on it has the others' backs.
Free forever · No credit card · for commercial operators
Eyes on LBL 4B, 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 LBL 4B 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 LBL 4B 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 LBL 4B and switch it all on
Free to join · nothing to install to start · cancel anytime
About LBL 4B
What kind of vessel is LBL 4B?
LBL 4B is a Freight Barge flagged to United States of America.
What is LBL 4B's U.S. Official No.?
LBL 4B's U.S. Official No. is 1229171.
How big is LBL 4B?
LBL 4B is about 61 m long, 10.7 m on the beam, drawing 4 m.
Is LBL 4B on the Master's Mate Safety Initiative Network?
Not yet. If LBL 4B is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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