was the ninth of twenty-four s, built for the Imperial Japanese Navy following World War I. When introduced into services, these ships were the most powerful destroyers in the world. They served as first-line destroyers through the 1930s, and remained formidable weapons systems well into the Pacific War. History Construction of the advanced Fubuki-class destroyers was authorized as part of the Imperial Japanese Navy's expansion program from fiscal 1923, intended to give Japan a qualitative edge with the world's most modern ships. The Fubuki class had performance that was a quantum leap over previous destroyer designs, so much so that they were designated . The large size, powerful engines, high speed, large radius of action and unprecedented armament gave these destroyers the firepower similar to many light cruisers in other navies. Isonami, built at the Uraga Dock Company was laid down on 19 October 1926, launched on 24 November 1927 and commissioned on 30 June 1928. Originally assigned hull designation “Destroyer No. 43”, she was completed as Isonami. Operational history On completion, Isonami, along with her sister ships, , , and , were assigned to Destroyer Division 19 under the IJN 2nd Fleet. During the Second Sino-Japanese War, from 1937, Isonami covered landing of Japanese forces in Shanghai and Hangzhou. From 1940, she was assigned to patrol and cover landings of Japanese forces in south China. World War II history At the time of the attack on Pearl Harbor, Isonami was assigned to Destroyer Division 19 of Desron 3 of the IJN 1st Fleet, and had deployed from Kure Naval District to the port of Samah on Hainan Island. From 4 December 1941 to 30 January 1942 Isonami was part of the escort for the heavy cruisers , , , and out of Samah and Camranh Bay, French Indochina in support of Malaya, Banka-Palembang and Anambas Islands invasion operations. On 27 February, Isonami was assigned to "Operation J" (the invasion of Java), and "Operation T" (the invasion of northern Sumatra) on 12 March and the "Operation D" (the invasion of the Andaman Islands on 23 March. She served patrol and escort duties out of Port Blair during the Japanese raids into the Indian Ocean. On 13–22 April Isonami returned via Singapore and Camranh Bay to Kure Naval Arsenal, for maintenance. On 4–5 June, Isonami participated in the Battle of Midway as part of Admiral Isoroku Yamamoto’s main fleet. While returning