I too have a copy of my father's Bluejacket's Manual, vintage 1940.
Several parts stick in my mind.
- There is a series of photographs detailing the wrong way to take a kink out of of a piece of wire rope. They are labeled "First mistake", "Second mistake" etc
- The section on ships includes a nice photo of the USS Arizona and states proudly that a battleship is ready to "fight any enemy, anywhere, any time". Several pages later, after destroyers and PT boats, they mention the aircraft carrier as a means to move airplanes from one place to another.
- Venereal disease is mentioned several times, usually in some context that says how anyone who contracts it will be punished. For example, time spent being treated does not count towards your enlistment commitment.