[Stealhead]

Maybe in a huge storm youd need to go over 200ft to not feel much roll but i have read that most of the time about 100ft or so under a sub wont get much effect at all from surface condtions. makes since as as you get deeper water pressure goes up and that would resist movement at laest from the surface. That had to be a very huge strom and what would be considered normal would not apply to the story that mike mentioned. And I am not saying there would be no movement under water just no where near the amount that the boat would get on the surface. Pretty much US sailors just toughed out very rough weather only when it was considered too dangerous or the motion become a fatigue factor on the crew would they dive to avoid the roughness. In Take Her Deep the author mentions that while in a wolf pack they hit rough seas and a sailor on watch on another sub got killed when a wave smashed his binocs into his cheast so hard it crushed his diaphram and he died hours later from the pain and inabilty to breath properly.(not like they could have done anything to save his life)