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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

BISON

MMSI 230938570 · Call sign OJNE

Not yet on Master's Mate
Type
Tug
Flag
FINFIN
Length
34 m
Beam
9 m
Draft
4.2 m
Call sign
OJNE
IMO
5001839
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
87

A Finnish harbour tug, BISON measures 34 metres. She has a beam of 9 m and a draft of 4.2 m. She's listed under MMSI 230938570, call sign OJNE, IMO 5001839. BISON is welcome on the Master's Mate Safety Initiative Network — a free, community-run watch where boats look out for one another.

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Live AIS position · Jun 9, 2026 03:52 UTC
Position
61.1141° N, 21.4454° E
Status
Moored
Speed
0.0 kn
Course
189°
Destination
FIRAU
ETA
06-09 00:00 UTC
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Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
Live AIS & Traffic
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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
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Onboard Cameras
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About BISON

What kind of vessel is BISON?
BISON is a Tug flagged to Finland.
Where was BISON last seen?
BISON was last reported in the Baltic Sea in Jun 2026 on public AIS.
What is BISON's MMSI?
BISON's MMSI is 230938570. Call sign OJNE. IMO 5001839.
How big is BISON?
BISON is about 34 m long, 9 m on the beam, drawing 4.2 m.
Is BISON on the Master's Mate Safety Initiative Network?
Not yet. If BISON is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).

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