Measuring hull's main dimensions: length overall(LOA. ), length between perpendiculars(LPP. ), breath molded(B. ), depth molded(D. ) and deflection before launching.

下水前测量船体主尺度：总长、两柱间长、型宽、型深、基线挠度。

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The length, rigidity and weight of a launching nose have significant influences on the internal forces of incrementally-launched main girder at construction stage.

导梁的长度、刚度及重量在顶推施工阶段对顶推主梁的内力有着重要的影响，其合理配置是全桥顺利顶推的关键。

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