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.
Tank Barge
OMS 303
U.S. Official No. 618657
Not yet on Master's MateType
Tank Barge
Flag
USALength
61 m
Beam
10.7 m
Draft
3.2 m
First reported
Jun 2026
AIS reports
1
Registered in the United States, OMS 303 is a 61-metre tanker. Her hull carries a beam measuring 10.7 metres and a draft of 3.2 m. Officially she's U.S. official number 618657. The Master's Mate Safety Initiative Network welcomes OMS 303 — free to join, cruiser-run, and always on watch.
Free forever · No credit card · for commercial operators
Eyes on OMS 303, 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 OMS 303 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 OMS 303 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 OMS 303 and switch it all on
Free to join · nothing to install to start · cancel anytime
About OMS 303
What kind of vessel is OMS 303?
OMS 303 is a Tank Barge flagged to United States of America.
What is OMS 303's U.S. Official No.?
OMS 303's U.S. Official No. is 618657.
How big is OMS 303?
OMS 303 is about 61 m long, 10.7 m on the beam, drawing 3.2 m.
Is OMS 303 on the Master's Mate Safety Initiative Network?
Not yet. If OMS 303 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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