Abstract
For maritime constructions, it is highly important to obtain reliable wave predictions for safety operation and work executable judgment. Advanced wave prediction method based on WAM model has recently been utilized in many marine construction sites. However, accuracy of the wave prediction under mild wave climate is not clear. This study investigates accuracy reduction factors of the WAM model based on the comparison between hindcast calculation and field data, with special reference to low wave condition. From this comparison, it is found that spectra obtained from the WAM model gives overestimation at high frequency region (0.3-0.4Hz), which might be induced by overestimation of wave height and also by underestimation of wave period in this region. Thus model improvement is required for high-frequency waves in order to increase prediction accuracy for lower waves.
