(May 27, 1977) President Jimmy Carter and Adm. Hyman G. Rickover, Retired, Director, Division of Naval Reactors, U.S. Energy Research Development Administration and Deputy Commander for Nuclear Propulsion, operate the bow and stern planes during a cruise aboard the nuclear powered submarine USS Los Angeles (SSN 688). Photo archived at Naval History
They were not friends. Rickover was too acerbic to relax with a mere lieutenant when Carter was in service.
Also, Rickover did not want his nukes to be distracted by things like children. His comments on "bird hatching" were very derogatory.