The paper describes a software system to simulate the ship motions in a crisis situation. The scenario
consists of a damaged ship subjected to wave excitation forces generated by a random sea state. The
simulation is displayed in an interactive Virtual Environment allowing the visualization of the ship
motions. The numerical simulation of the sea surface and ship motions requires intensive computation
to maintain the real-time or even the fast-forward simulations, which are the only ones of interest for
these situations. Dedicated tools to analyse the ship behaviour in time are also described. The system
can be useful to evaluate the responses of the ship to the current sea state, namely the amplitude,
variations and tendencies of ship motions, and help the planning and coordination of rescue
operations.