[BillCar]

Version IIC released.

http://www.filefront.com/15787155/Bi...%20Mk%20IIC.7z

Version IIC increases the squeak volume somewhat and leaves the impact volume as-is. The squeak is audible while enemy is pinging, impact sound is generally too quiet to hear until the game increases the sound file volume to let you know that the enemy is getting a return ("Enemy is pinging us, sir!").

This effect may depend on your personal speaker set-up, but as it is now, when I am playing, I find that I can't notice the impact sound until the enemy is getting a return on me - which would make sense from a realistic standpoint. This file continues to use the recording of the 40s/50s ping being recorded inside an old sub by the US Navy. These recordings were declassified and released in the 1960s by a sonar development company. The recordings themselves were presumably made in the 1940s or early 1950s.