AIP isn't quieter than a batter powered submarine, it's quieter than a nuclear powered submarine. Unless you're doing ridiculously long research dives (in whic

AIP isn't quieter than a batter powered submarine, it's quieter than a nuclear powered submarine. Unless you're doing ridiculously long research dives (in which case batteries don't suffice), or you care about noise on the surface (where you would use a traditional air burning diesel engine to recharge) it doesn't seem like this brings any advantages.