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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Peter the Great's Naval Fortress ： ウィキペディア英語版 Peter the Great's Naval Fortress Peter the Great's naval fortress or the Tallinn-Porkkala defence station was a Russian fortification line, which aimed to block access to the Russian capital Saint Petersburg via the sea. The plans for the fortress included heavy coastal artillery pieces along the northern and southern shores of the Gulf of Finland. The emphasis was put on the defences of the gulf's narrowest point, between Porkkala, (in current day Finland) and Tallinn, (in current day Estonia). This was a strategic point, as the two fortresses of Mäkiluoto and Naissaar were only 36 kilometres apart. The coastal artillery had a range of about 25 kilometres and could thus "close" the gap between the shores, trapping enemy ships in a crossfire. Furthermore, a new major naval base was constructed in Tallinn. ==Purpose== The decision to start construction of the naval fortress line came after the disastrous events at Tsushima, where the whole Russian Baltic Fleet had been annihilated. The road to Saint Petersburg was then unprotected and open. The quickest and cheapest way of dealing with this problem was to protect Saint Petersburg with a seemingly impenetrable zone of coastal artillery until a new fleet had been constructed. The idea was presented for the first time in 1907. Czar Nicholas II approved the plans on July 5, 1912, and the construction began soon thereafter. 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「Peter the Great's Naval Fortress」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.