At least Kennedy and George HW Bush were Sailors.
Carter himself was a Submariner.
And the crew of the USS Jimmy Carter can serve with pride knowing their ship is no longer named after the worst U.S. President.
Carter was a Lt. on a diesel boat. Then Rickover accepted the scammer and he went thru Nuc training at A1W prototype in Idaho (just like I did).
This article contented Carter was engineer officer on SSN575 precommissioning crew. Carter NEVER went to sea on a Nuc Submarine until he went out on a 688 class with Rickover when he was Resident IIRC.
Carter was a complete scam as many think he was a high ranking submarine officer. Lt isn't.