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The ''President Jackson''-class attack transport was a class of US Navy attack transport that saw service in World War II. Like all attack transports, the purpose of the ''President Jackson'' class was to transport troops and their equipment to hostile shores, and once there to execute amphibious invasions. To perform this task, attack transports were equipped with a substantial number of integral landing craft, and an abundance of antiaircraft weaponry to protect themselves and their vulnerable cargo of troops from air attack in the battle zone. ==Background== The ''President Jackson'' class was based on the Maritime Commission's ubitiquous Type C3 hull - specifically on either the C3-A, C3-P or C3-P&C types. This hull design had been finalized in the late 1930s as a type suitable for both merchant cargo service and also for naval auxiliary service in the event of war. Seven ships intended for commercial service with American President Lines were laid down by the Newport News Shipbuilding and Drydock Company of Newport News, Virginia between October 1939 and December 1940. The Maritime Commission acquired them all for military service before they were completed, but only five were initially handed to the Navy and designated ''President Jackson''-class transports. These five vessels were all later converted into attack transports and correspondingly reclassified with "APA" hull numbers. The remaining two ships, and , were not transferred to the Navy until mid-1943. Unlike the other ships they were not assigned APA numbers, but instead kept their original AP classification. However, they appear to have been fitted out as attack transports nevertheless and assigned to similar duties. The Dictionary of American Naval Fighting Ships does not classify these latter two vessels as ''President Jackson'' class, but since both ships were originally sister ships of the other five and served in the same wartime role, the DANFS omission may be an error and the ships are listed as ''President Jackson''s here. The original five ships of the class were laid down between October 1939 and November 1940. Time between initial laying of the keel to commission for the first five ships varied from 16 to 30 months - an unusually long time, which suggests the shipyard may have had other priorities. The first five were commissioned between 19 November 1941 and 31 August 1942, while the remaining two were commissioned in July and August 1943 respectively. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「President Jackson-class attack transport」の詳細全文を読む スポンサード リンク
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