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.
Tug
CMS THUNDERER
MMSI 232052186 · Call sign MOPA3
Not yet on Master's MateType
Tug
Flag
GBRLength
23 m
Beam
12 m
Draft
5.8 m
Call sign
MOPA3
IMO
9980928
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
24
CMS THUNDERER is a harbour tug on the the United Kingdom registry, 23 metres LOA. She has a beam measuring 12 metres and a draft of 5.8 m. Her registration reads MMSI 232052186, call sign MOPA3, IMO 9980928. The Master's Mate Safety Initiative Network welcomes CMS THUNDERER — free to join, cruiser-run, and always on watch.
Free forever · No credit card · for working boats
Built for boats that work — like CMS THUNDERER.
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 4, 2026
Position
54.6196° N, 5.9098° W
Working the Irish Sea? You're never out there alone.
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Joining the Safety Initiative Network doesn't just put CMS THUNDERER 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 CMS THUNDERER and switch it all on
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About CMS THUNDERER
What kind of vessel is CMS THUNDERER?
CMS THUNDERER is a Tug flagged to United Kingdom.
Where was CMS THUNDERER last seen?
CMS THUNDERER was last reported in the Irish Sea in Jun 2026 on public AIS.
What is CMS THUNDERER's MMSI?
CMS THUNDERER's MMSI is 232052186. Call sign MOPA3. IMO 9980928.
How big is CMS THUNDERER?
CMS THUNDERER is about 23 m long, 12 m on the beam, drawing 5.8 m.
Is CMS THUNDERER on the Master's Mate Safety Initiative Network?
Not yet. If CMS THUNDERER is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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