If you pull up your TDC screen, right next to the torpedo tube selector there is a small dial with two options, one is single and the other is salvo. Switch it to salvo and select from the various salvo selections on the dial. Now, what ever tubes you have selected for the salvo, they will all open and flood at the same time when you press "Q." Launch between each torpedo in a salvo is about 3 seconds. Be sure to change the salvo spread angle accordingly before firing, more than once I've had a salvo of 2 torps split a juicy freighter due to an incorrect slavo spread
