The assessment of the effect of incidents on the hull structure strength and ship survivability is based on the damage dimensions, i.e, length, height, depth. The assessment of the effect of changed external loads on the hull structure is based on data for the wind and wave conditions during the incident and the distance to a place of refuge, which determines the greatest possible wave load. Therefore, statistical data for damages resulting from incidents is necessary both in the design stage and in the process of developing operative methods to save the ship.