gun's maximum range from . The ship's secondary armament of twenty 50-caliber 14-centimeter guns was mounted in casemates on the upper sides of the hull and in the superstructure. The manually operated guns had a maximum range of and fired at a rate of six to 10 rounds per minute. Anti-aircraft defense was provided by four 40-caliber 3rd Year Type three-inch AA guns in single mounts. The high-angle guns had a maximum elevation of +75 degrees, and had a rate of fire of 13 to 20 rounds per minute. The ship was also fitted with eight torpedo tubes, four on each broadside, two above water and two submerged. Around 1926, the four above-water torpedo tubes were removed and the ship received three additional 76 mm 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 (DP) 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 ; they had a maximum ceiling of at their maximum elevation of +90 degrees. 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 two-pounder light AA guns were also added to the ship that same year. These guns had a maximum elevation of +80 degrees which gave them a ceiling of . They had a maximum rate of fire of 200 rounds per minute. When the ship was reconstructed in 1934–1936, the remaining torpedo tubes and the two forward 14 cm (5-1/2 inch) guns were removed from the hull. The remaining 14 cm guns had their elevation increased to +35 degrees which increased their range to . An unknown number of license-built Hotchkiss M1929 machine gun in twin mounts were added. The maximum range of these guns was , but the effective range against aircraft was . The cyclic rate was adjustable between 425 and 475 rounds per minute, but the need to change 30-round magazines reduced the effective rate to 250 rounds per minute. The unsatisfactory two-pounders were replaced in 1939 by twenty license-built Type 96 Hotchkiss Type 96 light AA guns in a mixture of twin-gun and single mounts. This was the standard Japanese light AA gun during World War II, but it suffered