The patent is a positioning tower for deep-water multi-layer block installation, consisting of three parts: a concrete pier, a tower body fixed on the concrete pier, and a crane tower installed at the top of the tower body. In the construction of gravity-type block wharves, through processes such as setting out baselines and underwater video camera-assisted installation, the positioning tower changes underwater installation control from divers directing installation underwater to real-time monitoring and direction on land, and can effectively control precision.

The positioning tower was applied in the construction of a wharf by CCCC Fourth Harbor Engineering Co., Ltd., achieving an excellent installation rate of 96.3%. The positioning tower improves installation precision and solves the problem of control precision in deep-water multi-layer block installation, and is conducive to large-scale promotion and application in construction in related fields.