Adding torpedoes while on cruise

[Cap'n Cruncz]

Good evening, help is requested since I am desperate! I just returned unharmed from a patrol, no torpedoes left in my sugarboat and except for massive air raids I had no problems so far on my way home. But now - all of a sudden this huge, massive, incredibly large, I lack words to describe it - cluster of ships appears on my map and it contains four aircraft carriers, lots of battleships, I do not know how many destroyers - but I have no torpedoes left. I mean come on, be realistic, in real life you'd ask the toothfairy and she'd gave you some torpedoes. I do not play for realism but fun, ergo I need my torpedoes stocked up again. I have to attack that combat group. I do not use any mods except for some boat skins and that lesser-aircraft mod. Is it possible to open some saved game file, edit some parameter and get torpedoes by that? I have been modifying crew like that and certainly you can change things like boat speed and so on. I don't want to cheat for all times, but I have to attack this convoi. I just have to. Really, there is no other option. What is to be done?