本研究主要是針對一縮小1/100比例之高速三體船模型於環流水槽中進行船模試驗，並且藉由改變船模中體與側體的橫向間距、縱向間距、船模吃水深度及船速，探討船體結構對阻力性能的影響。實驗結果顯示，三體船於低速行駛時由於浸水面積比傳統單體船型大，並無阻力特性優勢，在設計經濟航速時佛勞數必須大於0.2才能獲得較好之阻力特性。

In this work, a high-speed trimaran model of a scale of 1:100 was experimented in a circulating water channel. There are three control factors were investigated in this paper, that is, transverse span, longitudinal position and draft, and one noise factor－ship speed, which were used to conduct the parameter design in this work. The result shows that, on the condition of low speed, a trimaran can not offer better drag characteristic than a traditional mono hull ship, due to the fact that the area under water for trimaran is large. Better drag characteristic can be achieved for a trimaran only as Froude Number is greater than 0.2.