I recall hearing a lecture by General Trevor Dupuy, a military historian, in which he likened our victory over the Germans in WWII to the Mexicans’ victory over the Texans at the Alamo. In both cases, the winning side won not because of superior strategies or tactics but because of sheer power that eventually overpowered their opponents.
Even if the Germans had managed to use every torpedo produced to sink an American ship (with only one shot), the Germans still wouldn't have had enough torpedoes to sink our ships.