“Psychiatry and the Nuclear Submarine”, Aaron Satloff1967-10-01 (, ; backlinks; similar)⁠:

[Survey of naval personnel at a shipyard and all attached vessels, with examination of psychiatry referrals.

The results indicate that, despite intensive screening & an on-board doctor, formal records on psychiatric casualties from submarine patrols grossly underestimate the true rate of psychiatric issues among submarine crew, with a more plausible rate of ~3.8%.]