USS Kamehameha (SSBN-642) (called Kamfish by her crew), a Benjamin Franklin-class ballistic missile submarine, was the only ship of the United States Navy to be named for Kamehameha I, the first King of Hawaii (c. 1758-1819). She is one of only two ships of the United States to be named after a monarch. She was later reclassified as an attack submarine and redesignated SSN-642. The ship's motto was Imua, which roughly translates (from the Hawaiian) as "go forth and conquer." Another motto used by her crew was Kam do.