HAROLD MILLER

Patrol Vessel · IMO 4759269 · MMSI 338926438 · Last UTC 2025-12-27 17:02 UTC

Average Speed (60D)

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HAROLD MILLER

Patrol Vessel

Position time: 2025-12-27 17:02 UTC

Flag: usa

Country: United States of America

IMO: 4759269

MMSI: 338926438

GT: 358

Length: 44 m

Width: 8 m

Year: 2020

Call sign: NHDM

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.