 Another challenge with the main armament was that its weight , 437 long tons ( 444 t ) per turret , which had to be spread over much of the hull , led to increased stress on the structure . The closer the weight of the heavy guns to the ends , the greater the stress and risk for structural failure due to metal fatigue . High speed required fine ends , which were not especially buoyant , and the amount of space needed amidships for machinery precluded moving the main turrets further inboard . Not having to worry about a displacement limit allowed Capps the option of deepening the hull , which helped to some extent . He added a forecastle to allow for better seakeeping and to make room for officers ' quarters and restored the full height of the hull aft . The problem itself , however remained . 
