Nelson and Rodney as torpedo-defense benchmarks

Which battleships had the best torpedo defenses?

The answer selects Nelson and Rodney as leading examples, while stressing that no ship is an attractive place to be when a torpedo hits.

The Nelson class is favored among several credible designs because its underwater protection offered a comparatively reassuring margin. Torpedo defense reduces damage without providing immunity, and real outcomes still depend on hit location and damage control. This is an initial comparative judgment.