Since 1970, the Port and Airport Research Institute (PARI) has been cooperating with the Ports and Harbours Bureau, Ministry of Land, Infrastructure, and Transport, and its associated agencies, on the Nationwide Ocean Wave information network for Ports and HArbours (NOWPHAS).
　The PARI has been processing and analyzing the wave records obtained at this network, and has presented the wave statistics in a series of annual reports.
　This technical note is the 30 years coastal wave statistics report at the 58 network stations.
　The wave statislics at each station are presented in the following forms :
(1) the largest significant wave at each station since the observation started,
(2) the maximum and the mean significant waves during theobservation term,
(3) the joint distribution of the significant wave heights and periods,
(4) the joint distribution of the significant wave heights and wavedirections,
(5) the wave characteristic parameters during extremely severe sea states,
(6) the history of the observation condition at each station