Quote:
Originally Posted by Diopos
From wikipedia (yeah, I know  ):
Test depth is the maximum depth at which a submarine is permitted to operate under normal peacetime circumstances, and is tested during sea trials. The test depth is set at two-thirds of the design depth for United States Navy submarines, while the Royal Navy sets test depth slightly deeper than half (4/7ths) of the design depth, and the German Navy sets it at exactly one-half of design depth.[1] |
I find this works in SH2, SH3, and SH4 (with TMO). I haven't played the U-Boat missions yet in SH4 so I can't vouch for them.