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水雷是一种古老的海上作战兵器,直到现在仍是破坏舰船、威胁航道、难以扫除的一种廉价而有效的武器。把水雷布置在狭窄航道,可阻挡舰队的航行;把水雷布置在近海,可防止敌舰靠近陆地登陆和支援登陆作战。瑞典是个沿海国家,海岸线长7624千米,其中大部分海岸滨临内陆海。要想到达瑞典西南部临海国土,必须通过斯卡格拉克海峡和卡特加特海峡;要想到达瑞典南部及东部沿波罗的海的陆地,
Mine is an ancient maritime warfare weapon that until now is still a cheap and effective weapon that destroys ships, threatens waterways and is difficult to clean. Placing mines in narrow waterways can block the fleet's navigations; arranging mines in the open sea prevents the enemy ships from landing near land and supporting landing operations. Sweden is a coastal country with a coastline of 7,624 km and most of which are bordered by inland seas. In order to reach the coastal waters southwest of Sweden, it must pass the Skagrack Strait and the Gatkat Channel; in order to reach the land along the Baltic Sea in southern and eastern Sweden,