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.
Towing Vessel
CO-OP MARINER
MMSI 366984270 · Call sign WDB9872
Not yet on Master's MateType
Towing Vessel
Flag
USALength
355 m
Beam
34 m
Draft
2.8 m
Call sign
WDB9872
Official No.
627829
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
27
CO-OP MARINER, an American harbour workboat, measures 355 metres on deck. Her hull carries a 34 m beam and a draft of 2.8 m. She's listed under MMSI 366984270, call sign WDB9872. Working vessels like CO-OP MARINER are never truly alone on the Master's Mate Safety Initiative Network — free, with a fleet on watch.
Free forever · No credit card · for working boats
Built for boats that work — like CO-OP MARINER.
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
Last known position · Jun 3, 2026
Position
40.3090° N, 90.0698° W
Wherever CO-OP MARINER 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 working boats
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put CO-OP MARINER 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 CO-OP MARINER and switch it all on
Free to join · nothing to install to start · cancel anytime
About CO-OP MARINER
What kind of vessel is CO-OP MARINER?
CO-OP MARINER is a Towing Vessel flagged to United States of America.
Where was CO-OP MARINER last seen?
CO-OP MARINER was last reported in around 40°N 90°W in Jun 2026 on public AIS.
What is CO-OP MARINER's MMSI?
CO-OP MARINER's MMSI is 366984270. Call sign WDB9872.
How big is CO-OP MARINER?
CO-OP MARINER is about 355 m long, 34 m on the beam, drawing 2.8 m.
Is CO-OP MARINER on the Master's Mate Safety Initiative Network?
Not yet. If CO-OP MARINER is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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