AC was first introduced to US subs in WW2 to make the fire control computers more reliable.
Although more comfortable for crew, they lost bunk space for the AC equipment.
Although more comfortable for crew, they lost bunk space for the AC equipment.
They have layers of insulation for both thermal and acoustic reasons.
Subs and torpedos are interesting to study since navies and inventors really struggled to make viable models, and probably a higher percentage of sub pioneers died than in aviation, which is saying something.