A USN WWII Gato class sub had a complement of roughly 60 officers & men.
Modern submarines typically hold a complement of between 90 - 130 officers/crew, but that number can increase during extended deployments when the entire crew is usually aboard, which often isn't always the case due to individual crew training, leave, etc. Essentially, unless you're dead or dying, you're going to sea for extended deployments.
It is not unusual to have 150 crew/civilians aboard for certain operations, and it can get a bit cramped, especially with all of the extra food/supplies aboard.
All the sailors in it die.
yes
About 2,555 US Sailors died in the war. This figure takes into account US Navy airmen and riverine sailors.
The Australian war cabinet.
Submarine activity is very important to the security of the US.
several
2,555 US Sailors were killed in the Viet War.
The periscope, and I believe they have a lot more than 2 mirrors.
Shanghai was one place that sailors were taken to, many from San Francisco.
He was a US Naval Submarine Officer.
Virginia class
Only one US submarine sank in World War One.