[2022] Are Subs Best as Spotters?

There can be a lot of value in providing information to your team. If you're not in a position to deal damage, giving solid information allows your team to provide that impact.

Subs aren't generally as fast as Destroyers, so they are more limited in terms of repositioning to fit the flow of the battle, but that doesn't prevent them from being capable on the flank they are on.