it was in the readme.
S Class - Test Depth - 60 m
Pourpoise - Test Depth - 75 m
Salmon Class - Test Depth - 75 m
Sargo Class - Test Depth - 75 m
Tambor Class - Test Depth - 75 m
Gar Class - Test Depth - 75 m
Gato Class - Test Depth - 90 m
Balao Class - Test Depth - 120 m
Going deeper than this values always presents a risk.
risk lol, 5 metres is the most you can get and its near suicidal