One of the differences between Offshore, Inshore, and onshore lifting operations is the intensity of the dynamic forces acting on the load, the cable, and the crane. This intensity can reach several times the value of the static load. The dynamic force occurs due to movements of the crane base and the load before and during the lifting. These are primarily caused by wind, current, and especially by waves. A typical example is a crane installed on an FPSO (Floating Production, Storage and Offloading) removing a container from a supply vessel. From this concept comes an important design parameter, fundamental for the safety of lifting operations, which is the Dynamic Amplification Factor (FAD). Traditionally, lifting analysis are carried out through a pseudo-static procedure where moving loads are considered without due attention to the impact of inertial forces. In this procedure, the dynamic loads acting on the structure are multiplied by a coefficient, the FAD, which aims to increase these actions and thus avoid structural calculation considering the effect of acceleration. Therefore, this work proposes a comparison between the dynamic effects modeled through the traditional approach, using FAD, and those obtained through a computational model that utilizes the finite element method in which inertial forces are considered.