 The 15 @-@ inch turrets had been designed when the customary practice was to place the magazine above the shell room , and it was not cost @-@ effective to modify the ammunition hoists to accommodate the opposite arrangement adopted after the Battle of Jutland demonstrated the dangers of exposing the magazines to long @-@ range gunfire . The ship was provided with a powder @-@ handling room above the shell room to mimic the arrangement that turret 's hoists were designed to handle , and another set of hoists moved the propellant charges from the magazines to the powder @-@ handling room . The charges were stowed in cases to reduce their exposure to fire . 
