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USS ''North Carolina'' (SSN-777), a ''Virginia''-class attack submarine, is the fourth ship of the United States Navy named for the 12th U.S. state. The contract to build her was awarded to Northrop Grumman Newport News on 30 September 1998 and her keel was laid down on 24 May 2004. She was launched on 5 May 2007. ''North Carolina'' was commissioned on 3 May 2008. This class of submarine is unique in that it features a Photonics Mast Program (PMP) that freed ship designers to place the boat's control room in a lower, less geometrically-constrained space than would be required by a standard, optical tube periscope. It is additionally unique in the U.S. Navy for featuring all-digital ship and ballast control systems that are manned by relatively senior watchstanders and a pressure chamber to deploy SEAL divers while being submerged. ==History== The contract to build her was awarded to Northrop Grumman Newport News (then called Newport News Shipbuilding & Drydock Company) in Newport News, Virginia on 30 September 1998 and her keel was laid down on 22 May 2004. She was christened on 21 April 2007 sponsored by Linda Bowman, wife of Admiral Frank L. "Skip" Bowman, the former director of Naval Reactors. Captain Mark E. Davis, a native of upstate New York, was the ship’s first commanding officer and lead a crew of approximately 134 officers and enlisted personnel. The boat has physical connections to previous ''North Carolina''s. Sections of the teak decking from the previous ''North Carolina'' are reused within the submarine, and several pieces from a silver serving set made for the armored cruiser ACR-12, then transferred through the state governor to the battleship will be used aboard SSN-777. ''North Carolina'' joined the fleet on 21 February 2008, after problems with the boat's steam valve and internal piping system had forced two delays in the acceptance of the vessel.〔Tim Fish, 'US Navy finally takes delivery of North Carolina,' ''Jane's Defence Weekly'', 5 March 2008, p. 31.〕 Welding issues in the internal piping system scuttled a first-planned December 2007 delivery, and the discovery of an inadequate steam valve forced a further delay from January to February 2008. The ship's official commissioning ceremony was held on 3 May 2008, in Wilmington, North Carolina. The submarine joined the U.S. Navy's Atlantic Fleet based in New London, Connecticut. In 2010, ''North Carolina'' changed homeports from Naval Submarine Base New London to Naval Station Pearl Harbor.〔http://www.navy.mil/search/display.asp?story_id=50425〕 She left Groton for Pearl Harbor on 22 July 2010 and arrived at her new homeport, Joint Base Pearl Harbor-Hickam, on Monday, 15 November 2010 after her four-month transfer activities. During the transfer, the officers and crew of ''North Carolina'' conducted a series of exercises designed to test the boat's new combat systems and stealth capabilities. ''North Carolina'' is the third ''Virginia''-class attack submarine to be homeported at Joint Base Pearl Harbor-Hickam and is assigned to Commander, Submarine Squadron 1.〔http://www.csp.navy.mil/content/comsubpac_subsquadrons.shtml〕 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「USS North Carolina (SSN-777)」の詳細全文を読む スポンサード リンク
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