In the structural analysis a fundamental rule is played by the internal forces and moments: they are the only
variables on which the study for the primary level of the ship structural response is based, in accordance with
beam theory. First of all, based on the usual decomposition of loads general expressions for the distributed
still water, inertial and restoring loads have been revisited. Additionally, the influence of the non-linearity
arising from the hull geometry on loads has been studied. Particular attention has been also given to the
evaluation of loads due to the dynamic pressure in wave. Finally, two numerical examples have been carried
out in order to verify the aforementioned influence on loads. The results obtained have been particularly discussed
