Here is a interesting document I found on line that may be valuable to you re-enactors and museum boat guys.
War Instructions
United States Navy
1944
UNITED STATES FLEET
Headquarters of the Commander in Chief
http://www.history.navy.mil/library/online/war_instruct.htmChapter 9 is on the employment of submarines, includes some tactics of the day.
Here's something we all knew:
901. Habitability on the surface and submerged is generally fair under all conditions of extensive operations, if submarines are equipped with air-conditioning apparatus. Although this equipment greatly improves the ship's habitability,
oil fumes and battery gases cannot be disposed of when submerged.
COC needs to take a ride on one of our boats...