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
CHESLEY NO 4
U.S. Official No. 163577
Not yet on Master's MateType
Freight Barge
Flag
USALength
30.5 m
Beam
9.9 m
Draft
3 m
First reported
Jun 2026
AIS reports
1
Registered in the United States, CHESLEY NO 4 is a 30.5-metre barge. Below, she has a beam measuring 9.9 metres and a draft of 3 m. Her papers read U.S. official number 163577. CHESLEY NO 4 can join the Master's Mate Safety Initiative Network for free: think of it as a watch network that has every boat's back.
Free forever · No credit card · for commercial operators
Eyes on CHESLEY NO 4, 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 CHESLEY NO 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.
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 CHESLEY NO 4 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 CHESLEY NO 4 and switch it all on
Free to join · nothing to install to start · cancel anytime
About CHESLEY NO 4
What kind of vessel is CHESLEY NO 4?
CHESLEY NO 4 is a Freight Barge flagged to United States of America.
What is CHESLEY NO 4's U.S. Official No.?
CHESLEY NO 4's U.S. Official No. is 163577.
How big is CHESLEY NO 4?
CHESLEY NO 4 is about 30.5 m long, 9.9 m on the beam, drawing 3 m.
Is CHESLEY NO 4 on the Master's Mate Safety Initiative Network?
Not yet. If CHESLEY NO 4 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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