3D ship-seakeeping problem:weak-scatterer theory plus shallow-water on deck

Water-on-deck phenomena can be identied as local events caused by severe sea waves interacting with the ship. Their behavior is intrinsically transient and the involved time scales may be shorter or comparable with those of the incident waves. The compact masses of water invading the deck represent a danger for the stability, the comfort, the local structural integrity. The actual consequences depend on the vessel type and operational conditions, as well as on the incident-wave parameters relative to the ship. The need to perform a time-domain nonlinear analysis represents an important limitation in terms of CPU-time requirements when the seakeeping of a 3D vessel is examined. Therefore, as a rst attempt to examine the occurrence of water shipping for a real ship, the green-water investigation is coupled with a weakly-nonlinear model for the prediction of the global vessel motions.