试航，测量振动，专门公司做？哪些公司做？第二句话什么含意？

DraftMan

Measurement of global and local vibrations in the accommodations, drill floor, and machinery spaces shall be carried out by an independent third party analyst at Builder’s expense.

The performance of the main engine vibration mounts shall be evaluated.

blackmclaren

国内通常是科研院所和大学做，大工，702所，武汉理工，交大，哈工程等等都可以做。
第二句话指的是需要评估主机的振动状况。