入港限界値より見た小さい波の連の出現特性

概要

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At the coastal ports and harbors in Japan, small fishing boats have been operated almost to the limit of their performance when they enter a harbor under rough weather. The fishermen feel dangerous to sail into a harbor when they encounter a series of big waves around the harbor entrance. In other words, they can enter a harbor safely when small waves are forecasted at the entrance. The authors investigated the appearance of small wave grouping that the vessels encounter at the harbor entrance. Based on the observed wave data, we reviewed the difference in the encounter wave patterns by changing the conditions that the fishermen could control such as the timing, boat's speed and course to enter the harbor. As a result, it was clarified that there was a safe timing for a boat to enter the harbor when small waves were forecasted even in rough weather. In this paper, we review the characteristic of the small wave grouping, the information neccessary for the fishermen to sail into the harbor. We propose the way to express small wave grouping based on the wave data at the harbor entrance.
社団法人日本航海学会の論文
2001-09-25