In calculating the strength of V-shaped bottom structure of a planingcraft, there occurs a problem of how to calculate the virtual moment of inertia of V-shaped plating.
在对带斜升的艇底板架板架进行强度验算时，会遇到斜升底板虚惯性矩的计算问题。
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The effect of bubbly layer on propulsion performance of planingcraft is investigated by means of self-propelled model experiment in the towing tank of China Ship Scientific Research Center.
The roll decay test in still water and roll tests in regular waves at zero speed on model of a deep-Vee planingcraft are conducted, and problems arising from the data processing are discussed.