Submarines depend on reaching an ambush position undetected. Wider deployment of drone-carried anti-submarine sensors could make that harder and require longer-range torpedoes. Another possibility is a submarine-launched uncrewed vehicle moving closer before releasing its own torpedo. The vehicle would make the exposed approach, but controlling it depends on difficult underwater communications. Two-stage weapons offer another option, though torpedoes approaching over long distances may be heard before impact.
Notable Point · 2:07:29-2:09:39
Drone sensors and the pressure for longer-range torpedoes
More extensive sensing could force submarines to attack from farther away.