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
TUG 91
MMSI 205337590 · Call sign OT3375
Not yet on Master's MateType
Tug
Flag
BELLength
30 m
Beam
10 m
Call sign
OT3375
IMO
6504223
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
85
TUG 91 is a tugboat under Belgian registration, 30 metres in length. She carries a 10-metre beam. She broadcasts as MMSI 205337590, call sign OT3375, IMO 6504223. Put TUG 91 on the free Master's Mate Safety Initiative Network and keep the working fleet looking out for each other.
Free forever · No credit card · for working boats
Built for boats that work — like TUG 91.
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 12:52 UTC
Position
51.3142° N, 4.3192° E
Status
Under way (engine)
Speed
0.0 kn
Course
148°
Destination
THUIS
Working the North Sea? You're never out there alone.
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Joining the Safety Initiative Network doesn't just put TUG 91 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 TUG 91 and switch it all on
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About TUG 91
What kind of vessel is TUG 91?
TUG 91 is a Tug flagged to Belgium.
Where was TUG 91 last seen?
TUG 91 was last reported in the North Sea in Jun 2026 on public AIS.
What is TUG 91's MMSI?
TUG 91's MMSI is 205337590. Call sign OT3375. IMO 6504223.
How big is TUG 91?
TUG 91 is about 30 m long, 10 m on the beam.
Is TUG 91 on the Master's Mate Safety Initiative Network?
Not yet. If TUG 91 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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