Saint Lawrence Seaway

Japanese: Saint Lawrence Seaway(英語表記)SaintLawrenceSeaway
Saint Lawrence Seaway

The Welland Canal, which bypassed Niagara Falls between Lake Erie and Lake Ontario, was opened in 1829, providing a direct route from the Atlantic Ocean to the continental interior. (After several improvements, the current canal is 43 km long and has eight locks that allow navigation across the 99 m drop between the two lakes.) Negotiations between Canada and the United States had been ongoing since the end of the 19th century regarding the improvement of the St. Lawrence River waterway, but the project was repeatedly delayed. Finally, in 1954, construction of the waterway and hydroelectric dam began, and the Saint Lawrence Seaway was completed in 1959. As a result, ocean-going ships with a capacity of 27,000 tons could now travel upriver from Montreal to Lake Superior, passing through 16 locks and descending a drop of 180 m.

*Some of the terminology that mentions "Saint Lawrence Seaway" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…エリー湖とオンタリオ湖の間のナイアガラ滝を迂回するウェランド運河Welland Canalが1829年に開通して,大西洋から直接大陸内部へ入る航路が開かれた(数度の改良工事が行われ,現在の運河は全長43km,両湖間の99mの落差を八つの閘門(こうもん)を設けて航行可能にしている)。19世紀末からカナダとアメリカの間でセント・ローレンス川の水路改良に関して交渉がつづけられていたが,たびたび計画が遅延し,ようやく1954年水路開削と水力発電ダム建設の工事が開始され,1959年,セント・ローレンス水路Saint Lawrence Seawayが完成した。その結果,モントリオールからスペリオル湖まで,2万7000トンの積載能力をもつ外洋船が,16の閘門を通って180mの落差を遡航(そこう)することが可能になった。…

※「Saint Lawrence Seaway」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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