As a safety precaution, your submarine has been supplied with outer torpedo tube doors in order to prevent flooding when loading said tubes with further weaponry / ordnance. As such is the case, the torpedo room operator ~must~ open said outer door(s) prior to attempting to launch said ordnance at unfriendly (or otherwise) targets by use of the <Q> (Queen) key. This step would be attempted after closing the interior door, of course. Cycle through the tube selection with the <W> (Whiskey) key for the forward room, and the <E> (Echo) key for the Aft room. Failure to do so, and attempts to over ride said safety interlock could potentially result in a catastrophic internal explosion, if the weapon did engage, which would not only render your submarine potentially inoperable, but would complicate attempts to surface afterwards, and make the inhaling of a gaseous atmosphere nigh on impossible...
Sorry, I'm full of it today...
The "Q" key opens your torpedo tube doors though, so that you can "launch". The keyboard "shortcut" to actually fire the torpedo, is press the <Ctrl> key and hold it, while you then hit the <Enter> key. In the root folder of the SH4 install, after you activate Fall of the Rising Sun Ultimate, you will find a couple of keyboard "pictures", "SH4_Q-Ref_Card_Front.jpg" and "... _Back.jpg" for further reference to what is available...
