My dad (a returned LDS missionary) served in the Navy during WWII in the Pacific. In fact there were several Mormon men from our same small town who were on the same ship.
My dad had claustrophobia. He never mentioned that his garments were uncomfortable....he only lamented about the close living quarters on a ship. I think it must have almost driven him nuts! When he was drafted, he was supposed to be assigned to a submarine, in fact he was sent to submarine training.... until they found out he was claustrophobic.
Today, one must volunteer for submarine duty. My husband did so.
A very close friend of mine wears her garments, and I always feel bad for her in the hot summer where we live. It is hard enough to wear outer garments then!!!