MATSU MARU NO. 21

Oil Products Tanker · IMO 9789099 · MMSI 431008453 · Last UTC 2026-03-11 20:07 UTC

Average Speed (60D)

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MATSU MARU NO. 21

Oil Products Tanker

Position time: 2026-03-11 20:07 UTC

Flag: jpn

Country: Japan

IMO: 9789099

MMSI: 431008453

DWT: 5446

GT: 4160

Year: 2016

Call sign: JD4086

Destination is not available in AIS.

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

Track window: last 60 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.

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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.