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
OCEAN CHALLENGER
MMSI 250004312 · Call sign EISG9
Not yet on Master's MateType
Tug
Flag
IRLLength
33 m
Beam
11 m
Draft
4.8 m
Call sign
EISG9
IMO
9085209
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
85
OCEAN CHALLENGER is a working tug under the Irish flag, 33 metres overall. OCEAN CHALLENGER has a beam measuring 11 metres and a 4.8-metre draft. Her papers read MMSI 250004312, call sign EISG9, IMO 9085209. Join OCEAN CHALLENGER to the Master's Mate Safety Initiative Network — free, and built by cruisers for cruisers.
Free forever · No credit card · for working boats
Built for boats that work — like OCEAN CHALLENGER.
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
Live AIS position · Jun 9, 2026 04:03 UTC
Position
51.6506° N, 9.9084° W
Status
Moored
Speed
0.0 kn
Course
208°
Destination
CTB
ETA
04-30 13:30 UTC
Wherever OCEAN CHALLENGER roams, you're never out there alone.
Thousands of cruisers on the Master's Mate Network — ready to help the moment something goes wrong.
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The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put OCEAN CHALLENGER 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 OCEAN CHALLENGER and switch it all on
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About OCEAN CHALLENGER
What kind of vessel is OCEAN CHALLENGER?
OCEAN CHALLENGER is a Tug flagged to Ireland.
Where was OCEAN CHALLENGER last seen?
OCEAN CHALLENGER was last reported in around 52°N 10°W in Jun 2026 on public AIS.
What is OCEAN CHALLENGER's MMSI?
OCEAN CHALLENGER's MMSI is 250004312. Call sign EISG9. IMO 9085209.
How big is OCEAN CHALLENGER?
OCEAN CHALLENGER is about 33 m long, 11 m on the beam, drawing 4.8 m.
Is OCEAN CHALLENGER on the Master's Mate Safety Initiative Network?
Not yet. If OCEAN CHALLENGER is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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