This action will address the modeling and simulation of the MWSM impact machine, available at the shipyard of Ferrol. The machine is used to carry out impact tests on its own equipment and those of the supply chain that have to be mounted on board ships, and seeks to subject the equipment to the accelerations that they would have to withstand in the event of suffering the effect of a close explosion. The machine consists of a frame, to which the equipment to be tested can be attached, both in a horizontal and inclined position, and a pendulum, which can be raised to the desired height within a certain range. The problem is that it is not easy to predict the accelerations that the equipment will undergo when the test is carried out, so the equipment manufacturer cannot be informed of this, who must prepare the equipment to withstand unknown accelerations. This causes that, in many cases, the accelerations of the test are not those expected by the manufacturer, which entails its oversizing, or the destruction of the equipment, with the consequent loss of time and money. This line of research seeks to alleviate this problem through machine and equipment modeling, and test simulation, so that the level of acceleration that the equipment will have to withstand during the test can be predicted with acceptable precision, and report on this to the manufacturer in advance.