 Around 1926 , the four above @-@ water torpedo tubes were removed and the ships received three additional 76 @-@ millimeter AA guns that were situated around the base of the foremast . They were replaced by eight 40 @-@ caliber 12 @.@ 7 @-@ centimeter Type 89 dual @-@ purpose guns in 1932 , fitted on both sides of the fore and aft superstructures in four twin @-@ gun mounts . When firing at surface targets , the guns had a range of 14 @,@ 700 meters ( 16 @,@ 100 yd ) . Their maximum rate of fire was 14 rounds a minute , but their sustained rate of fire was around eight rounds per minute . Two twin @-@ gun mounts for license @-@ built Vickers 2 @-@ pounder light AA guns were also added to the ship that same year . They had a rate of fire of 200 rounds per minute . 
