KOUN MARU

Tug · IMO 8349476 · MMSI 431013012 · Last UTC 2026-03-02 06:24 UTC

Average Speed (60D)

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Static vessel map preview

KOUN MARU

Tug

Position time: 2026-03-02 06:24 UTC

Flag: jpn

Country: Japan

IMO: 8349476

MMSI: 431013012

GT: 180

Year: 2019

Call sign: JD4589

Destination is not available in AIS.

AIS refresh is typically every 4–6 hours, sometimes up to 1–2 days.

Track window: last 57 days

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Nearest known locations from geocache labels around the vessel.

Nearby locations are being calculated.

Modeled destinations using route history and peer traffic context.

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Inferred port calls from sparse AIS snapshots.

Port call inference is loading.

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How often is this page updated?

AIS updates are usually every 4–6 hours. In low-coverage areas delays up to 1–2 days are possible.

Why are some vessel fields missing?

Some AIS transponders do not transmit complete static metadata.

How accurate are destinations and port calls?

These are probabilistic model outputs and should be treated as signals, not confirmations.