Some numerical results obtained by the code MELINA are given. This code has been designed for the solution of three-dimensional steady and transient flows past a floating or submerged body; the fundamental equations of dynamics are taken into account in the case where the body is freely floating. Only the case of an ocean of infinite depth is addressed here. It is shown that convergence to a steady state is achieved in the case of a periodic forced motion if the history of the motion is correctly taken into account. Also, the case of a freely floating sphere with initial vertical displacement from equilibrium is treated and compared with experiments.