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The Louis Joubert Lock ((フランス語:Forme Ecluse Louis Joubert)) also known as the Normandie Dock, is a lock and major dry dock located in the port of Saint-Nazaire, in Loire-Atlantique northwestern France. Owned by the Port authority of Nantes-Saint-Nazaire and not the ship building company Chantiers de l'Atlantique, its strategic importance as a major naval construction and maintenance asset since its completion in 1934, resulted in it becoming the main target of the British Army Commando raid of 1942, the St. Nazaire Raid, to stop German battleships such as ''Tirpitz'' from accessing maintenance facilities in the Atlantic Ocean. ==Functions== The lock has two major functions: *To give access to the Loire River and hence the Atlantic Ocean for ships of the biggest size, from the port of Saint-Nazaire. The port maintains a constant water level, and the lock allows this to be maintained while also allowing access to for the largest ships *For the maintenance and the construction of large ships, the lock can be drained and hence made into a dry dock, making it possible to work on normally submerged or immersed parts of ships. 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「Louis Joubert Lock」の詳細全文を読む スポンサード リンク
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