In what decade was the submarine named "San Juan" built?
ARA San Juan (S-42): ARA "San Juan" (S-42) is a TR-1700-class diesel-electric submarine in active service with the Argentine Navy. TR-1700-class submarine: The TR-1700 ("Santa Cruz") is a class of diesel-electric patrol submarines built by Thyssen Nordseewerke for the Argentine Navy in the 1980s.
1980s