The report presents results of strong-motion earthquake observation is Japanese ports in 1988. Strong-motion earthquake observations results, original acceleration and their digital tables, corrected accelerations, integrated velocities and displacements, loci of acceleration, velocity and displacement, response and Fourier spectra for corrected acceleration are presented with a brief explanation on the processing of digitization and correction.
　3635 records have been obtained in the network as of December 1988. 249 records of them were obtained during 1988. The network consistes of 84 strong-motion accelerographs as of December 1988. This is 22th publication in the series.