How sensitive would torpedoes of this era be to the concussive shock of the battleship's own guns?
Short answerTheir shock tolerance is not quantified. The proposed response is to fire the exposed torpedoes early, before repeated main-gun fire over the launchers.
NotesThe Italian design's torpedo launchers sit exposed on deck near the main battery's firing arcs. No measured shock-tolerance figure is supplied for the contemporary torpedoes. Drachinifel intends to expend them early: they could be fired in a close Mediterranean engagement or used as spoiling shots to disrupt an opponent's maneuvering at longer range. Keeping them aboard through a prolonged gunfight would leave them exposed while the main guns repeatedly fired overhead. The proposed tactic therefore limits how long the ship carries this vulnerable armament during an action.