I would like to add that the time to recharge the air banks seems way to short anyway. Take a look at some videos on YouTube where they blow the tanks next to the pier, that is a lot of air to recharge.
But like ETR mentioned, once you've committed to throwing the switches knowing the tactical disadvantage you will have but weighing the survival of ship against that, you are going to the surface unless you've already taken on too much water. Going back under without repairs is just making the enemies job easier.
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