was the 15th of 24 s, built for the Imperial Japanese Navy following World War I. When introduced into service, 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. She is most famous for ramming the PT-109 commanded by Lieutenant John F. Kennedy, who would later become the 35th President of the United States. 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. Amagiri, built at the Ishikawajima Shipyards in Tokyo was the fifth in an improved series, which incorporated a modified gun turret which could elevate her main battery of /50 cal Type 3 naval guns to 75° as opposed to the original 40°, thus permitting the guns to be used as dual purpose guns against aircraft. Amagiri was laid down on 28 November 1928, launched on 27 February 1930 and commissioned on 10 November 1930. Originally assigned hull designation “Destroyer No. 49”, she was designated Amagiri before her launch. Inter-war period In 1935, after the Fourth Fleet Incident, in which a large number of ships were damaged by a typhoon, Amagiri, along with her sister ships, were modified with stronger hulls and increased displacement. In 1937, Amagiri covered landing of Japanese forces in Shanghai and Hangzhou during the Second Sino-Japanese War. In 1940, she was assigned to patrol and cover landings of Japanese forces in south China, and subsequently participated in the Invasion of French Indochina. World War II Early operations At the time of the attack on Pearl Harbor, Amagiri was assigned to Destroyer Division 20 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 the end of the year, Amagiri covered the landings of Japanese troops in Malaya, and was part of the escort in support of "Operation L" (the invasion of Banka and