HAI YANG SHI YOU 546

Offshore Supply Ship · IMO 9898369 · MMSI 413294540 · Last UTC 2026-03-04 18:03 UTC

Average Speed (60D)

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Static vessel map preview

Offshore Supply Ship

Position time: 2026-03-04 18:03 UTC

Flag: chn

Country: China Peopless Republic

IMO: 9898369

MMSI: 413294540

DWT: 2143

GT: 2216

Year: 2022

Call sign: BOSV4

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.