HAI YANG SHI YOU 540

Offshore Supply Ship · IMO 9898319 · MMSI 413274240 · Last UTC 2026-03-04 19:52 UTC

Average Speed (60D)

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Offshore Supply Ship

Position time: 2026-03-04 19:52 UTC

Flag: chn

Country: China Peopless Republic

IMO: 9898319

MMSI: 413274240

DWT: 2025

GT: 2379

Year: 2021

Call sign: BOOF4

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.

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.