The submarine U.S.S. Nautilus was the first oceangoing vessel to use this form of power
The first nuclear submarine, USS Nautilus (SSN-
571), put to sea in 1955 (SS was a traditional designation for US submarines, 
while SSN... [DOC] [TLE] Nuclear navy - Wikipedia [PAR] Nuclear navy, or nuclear-powered navy consists of naval ships powered by 
relatively small onboard nuclear reactors known as naval reactors.