It looks like warships with electric drive are _just_ starting to go into production. See https://en.wikipedia.org/wiki/Integrated_electric_propulsion#List_of_

It looks like warships with electric drive are _just_ starting to go into production. See https://en.wikipedia.org/wiki/Integrated_electric_propulsion#List_of_IEP_ships https://en.wikipedia.org/wiki/Integrated_electric_propulsion... and https://en.wikipedia.org/wiki/Columbia-class_submarine#Electric_drive https://en.wikipedia.org/wiki/Columbia-class_submarine#Elect... for some background. Both the Ohio and Los Angeles class submarines use mechanical linkage propulsion, not electric, if I understand correctly.