The amount of fuel carried was also increased to help lower the center-of-gravity. This increased the displacement to 2050 tons standard tons and over 2400 tons full load. The rebuild reduced the top speed slightly to 34 knots. Armament The main battery consisted of six Type 3 127 mm 50 caliber naval guns, mounted in pairs in three weather-proof, splinter-proof, gas-tight gun turrets . These guns were dual purpose guns that could be elevated to 75 degrees, making them the world's first destroyers with this ability. Ammunition was brought up on hoists from magazines located directly underneath each gun turret, which had a far greater rate of fire than those of other contemporary destroyers in which ammunition was typically manually loaded. However, the gun houses were not bullet-proof, and were thus actually still gun mounts, rather than proper turrets. The three triple torpedo launchers used on the standard Fubuki-class retained, and originally Type 8 torpedoes were carried. These were later replaced with the famous Type 93 "Long Lance" oxygen-propelled torpedoes during World War II. Anti-aircraft capability was initially two Type 93 13 mm AA Guns mounted in front of the second stack. In 1943, an additional pair of Type 93 guns was mounted in front of the bridge, which was later changed to Type 96 25mm AA Guns on and in January 1944. These vessels also lost one of their aft guns in April 1944 in exchange for two triple Type 96 guns, and another pair of triple Type 96 guns was added between the aft torpedo mounts. Hibiki had another 20 single-mount Type 96s added, as well as a Type 22 and Type 13 radar, before the end of the war. Operational history Of the four Akatsuki class vessels, only Hibiki survived the war, and was awarded as a prize of war to the Soviet Navy, and continued to be used a floating barracks ship until retirement in 1953. Eventually, she was used as target-practice in the 1970s, where she was finally sunk. was lost at the Naval Battle of Guadalcanal in November 1942, where she was sunk by American cruiser and destroyer gunfire. Ikazuchi was sunk while escorting a convoy 200 miles south-southeast of Guam on April 14, 1944 by the . exploded after being struck by torpedoes launched by in the Celebes Sea near Tawitawi on 14 May 1944. List of Ships Type III (Akatsuki) See also