Fathermore it is also proved that the approach of correctional coefficient may lead to lower frequencies, especially for the first natural frequency.

• 用推荐的流固耦合计算方法，分别计算了浸入水中船体单臂和双臂尾轴架的固有频率，进一步证明了修正系数法导致了偏低的频率，特别是基频的计算值。