How can a big surface force, steaming more than a thousand miles towards a big mission, avoid enemy submarines? Like what the US carriers at Midway avoided, where Kurita failed in the first engagement at Leyte Gulf, where the Wasp and North Carolina failed at Guadalcanal, where Mikawa succeeded going in at Savo but failed in going out. 1. Are you still at risk of a torpedo attack when you're doing 30+ knots in open sea? 2. Can't you make occasional detours to throw off subs, search planes, and coast watchers? 3. The Atlantic war made me think it's the subs that are being hunted.