Swaging (Small Corrugation)

Plate surfaces in ships must normally be stiffened for reinforcement and to prevent buckling. The normal way of doing this is to weld stiffeners to the plate. Other means of getting the same result is to corrugate the plate surfaces. There are two principal types of corrugations: large-size knuckling, often used in bulkheads in tanks on the one side, smaller, stiffener-like corrugations, often used in super structures, on the other. The latter type is called swaging and the general principles and the customer control of it are described in this chapter.