RYUHO MARU No. 8

Whale-Catcher · IMO 5192456 · MMSI 0

Average Speed (60D)

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RYUHO MARU No. 8

Whale-Catcher

Position time: Not available in AIS yet

Flag: jpn

Country: Japan

IMO: 5192456

MMSI: 0

DWT: 520

GT: 750

Year: 1956

Call sign: JCZH

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.

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.