 The carriers ' primary anti @-@ aircraft ( AA ) armament consisted of eight twin @-@ gun mounts equipped with 40 @-@ caliber 12 @.@ 7 @-@ centimeter ( 5 in ) Type 89 dual @-@ purpose guns mounted on projecting sponsons , grouped into pairs fore and aft on each side of the hull . The guns had a range of 14 @,@ 700 meters ( 16 @,@ 100 yd ) , and a ceiling of 9 @,@ 440 meters ( 30 @,@ 970 ft ) at an elevation of + 90 degrees . Their maximum rate of fire was fourteen rounds a minute , but their sustained rate of fire was around eight rounds per minute . The ship was equipped with four Type 94 fire @-@ control directors to control the 12 @.@ 7 cm guns , one for each pair of guns , although the director on the island could control all of the Type 89 guns . 
