Farragut's lightweight Mark 32 torpedo tubes marked a move away from the 21-inch weapons carried by earlier destroyers. Dropping the larger weapons is judged a sensible decision for the requirements of the time. The counterfactual asks what continued development of that larger diameter could have made possible. An uncrewed underwater vehicle could combine a torpedo function with extended ASW reach, using the extra volume unavailable in the smaller weapon. That is a possible development path, rather than an existing Farragut capability.
Notable Point · 28:46-30:32
The lost volume of heavyweight torpedo tubes
The move to lightweight ASW torpedoes raises a counterfactual about retaining 21-inch systems for larger uncrewed underwater vehicles.