Abstract: The lifting of large equipment is an important part of the construction of offshore engineering projects. However, due to the tight schedule of the project and the late delivery of the equipment, a large number of side lifting operations are caused, which increases the risk and difficulty of the installation of the equipment. The base of a large horizontal vessel is generally saddle type. Because of its long size and no slippage, the side lifting of such equipment is very difficult. Therefore, it is necessary to study and optimize the side lifting technology of large saddle equipment. Taking the corrugated plate interceptor skids of the JZ9-3 project CEPD module as an example, this paper introduces the process and method of the large saddle equipment side lifting, which provides a positive guiding significance for the large saddle equipment side lifting operation of the offshore engineering project.