Pounding
When a ship is pitching, the bows often lift clear of the water and then slam down heavily onto the sea, subjecting the forepart to severe pounding. TO compensate for this, the bottom is strengthened to 0.25L aft of F.P. To resist pounding, the forward bottom structure is strengthened for between 25% and 30% of the length, depending on the ships Cb. Plate Ûoors are Útted on each frame station (transverse framing) or alternate frame stations (longitudinal framing) with intercostal side girders not more than 2.2m apart. The four strakes of shell plating either side of the keel are generally increased in thickness in the pounding region.
When a ship is pitching, the bows often lift clear of the water and then slam down heavily onto the sea, subjecting the forepart to severe pounding. TO compensate for this, the bottom is strengthened to 0.25L aft of F.P. To resist pounding, the forward bottom structure is strengthened for between 25% and 30% of the length, depending on the ships Cb. Plate Ûoors are Útted on each frame station (transverse framing) or alternate frame stations (longitudinal framing) with intercostal side girders not more than 2.2m apart. The four strakes of shell plating either side of the keel are generally increased in thickness in the pounding region.
