RYUZAN MARU No. 28

General Cargo Ship · IMO 7818171 · MMSI 0

Average Speed (60D)

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RYUZAN MARU No. 28

General Cargo Ship

Position time: Not available in AIS yet

Flag: jpn

Country: Japan

IMO: 7818171

MMSI: 0

DWT: 1200

GT: 449

Year: 1978

Call sign: JL4562

Destination is not available in AIS.

Latest position is not available yet.

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.