1.1 This specification covers the requirements applicable to the design and construction of centrifugal pumps for shipboard application. The three classes of service covered by this specification are as follows: 1.1.1 Cl This specification covers the requirements applicable to the design and construction of three classes of centrifugal pump (Class 1, Class 2, and Class 3) for shipboard application. When selecting material combinations, the conditions under which the va