防波堤の配置計画に対する操船者の選好性評価 : 三次元視覚モデルの提案

概要

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It is desirable that mariners' preference is considered into the design process of the layout of break water and the dimension of harbour entrance. In the present paper, evaluation model is proposed to show the sense of safety that mariners would feel during the passing manoeuvre at the harbour entrance by a quantitative index. Mariners can navigate with less anxiety if there are enough space of water within their visual field from the bridge. The larger the sea room the greater the safety margin, and vice versa. In the proposed model, the extent of the sea room lying between the edge of ship's blind area and the break water was calculated under the image of the three dimensional visual field. And the index was defined as shown in Eqs. (1)〜(4). On the basis of this studies, it is possible to know how much percentage of mariners can accept the designed layout and dimensions of the break water.
社団法人日本航海学会の論文
1993-09-25