港内操船における曳船の支援効果について-II : 風潮流等外乱の影響

概要

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In the previous paper, we discussed the characteristics of turning motion of ship under tugboat's assistance without disturbance. But the characteristics of ship motion in harbour is rather complex due to wind and tidal current effect. In this paper, we have investigated and cleared these characteristics of turning and lateral motion of ship in harbour. The summary results are as follows. (1) The area required in turning motion depends on the wind direction and speed. (2) It is possible to decrease the area required in turning motion by control of the ship longitudinal motion under wind effect. (3) In case of approaching berth, the usage of performance curve of transeverse speed enables to know the timing to brake of motion. (4) In case of lateral motion under wind effect, it is most important to cancel initial wind force by tugboats.
社団法人日本航海学会の論文
1994-03-25