the science of designing ships and other waterborne craft.
the designing of ships
noun 1. a collegiate institution for training naval officers.
noun 1. an alloy of about 60 percent copper and 40 percent zinc, with traces of lead, tin, arsenic, and iron, used in marine and steam-generating equipment.
noun 1. 2 (def 5).
noun 1. an astronomical observatory located in Washington, D.C., operated by the U.S. government, and responsible for the U.S. time service.