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In this paper, an estimation of wave parameters in the shallow area using fishing operational records obtained from a fishfinder and GPS was described. The operational pattern that the boats run slowly in the shallow area during the fishing operation was shown by the records. Time series of changes in the records from fishfinder were separated into two components: one is associated with bathymetry and the other is due to the ships heaving motion generated by waves. Wave height and period estimation was based on power spectrum analysis of the time series. The wave parameters obtained by the present method were in good agreement with the wave measurement in the field.

Estimation of Wave Parameters in Shallow Area using Operational Records of Fishing Boats