SSBN-659, the USS Will Rogers, was commissioned OTD in 1967. See her head:
https://toilet-guru.com/submarine.html?s=mb #submarine #history
Submarine Toilets — Toilets of the World
A Nazi submarine was sunk by its own toilet off the coast of Scotland during the last month of World War II. The embarrassing fate of the U-1206. All this and more on the Toilets of the World.
Bob the Traveler