What vessel type is XXX?
USS Hyman G. Rickover (SSN-709)
USS Hyman G. Rickover (SSN-709), a Los Angeles-class submarine, was the first ship of the United States Navy to be named for Admiral Hyman G. Rickover, pioneer of the nuclear Navy, and the only Los Angeles-class submarine not named after a United States city or town.
Los Angeles-class submarine