波浪中タグボートの曳引力及び押力の特性に関する調査 : 2軸A. D. Propellerタグボートの模型実験

概要

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At present, there are few data on the characteristics of tow force and push force of tugboat in regular waves. In order to carry out the berthing maneuver correctly and safely, it is important to obtain the above data. In this paper, the characteristics of tow force and push force of tug boat in regular waves, relating to the change of wave length/ship length ratio, wave height, propeller thrust and so on, was studied through model experiments using a twin Azimuth-circle Drive Propeller (A. D. P.) tugboat model. Main results are as follows; (1) Mean tow force and mean push force in waves hardly changed comparing with each force in still water. (2) Fluctuating component of tow force and push force increased in approximate proportion to wave height. (3) The above fluctuating forces decreased inverse proportion to output of A. D. P
2004-09-25