“Maybe long-term, but other US Navy craft have had electric propulsion. I’m thinking of all the diesel-electric subs in WWII...”
The aircraft carriers Saratoga and Lexington (Built in the 1930’s) used a Diesel Electric propulsion system like a locomotive. Would those count?
That was actually (steam) turbo-electric. Several battleship classes, like the Colorados, had it.
The Saratoga and Lexington used a turbo-electric drive, not diesel electric. Power was provided by 16 steam boilers to the four electric-driven drive shafts.