论文部分内容阅读
1939年10月13日夜,拥有760名官兵的英国大型战舰“皇家橡树号”正停泊在斯卡帕港湾。突然,一声巨雷般的轰鸣,英国军舰被葬身海底,舰上官兵几乎无一生还。这是第二次世界大战中纳粹德国用“U—47”潜艇发射鱼雷制胜的著名战例。第二次世界大战中,潜艇显示了强大的威力、先后击沉了数百艘大小战舰。最早的潜艇雏形是17世纪荷兰物理学家科尼利斯·德雷尔设计的木制潜水船,船体外罩上涂油的牛皮,船内装有羊皮囊。羊皮囊灌水,船下沉;羊皮囊排水,船上浮。
On the night of October 13, 1939, the British royal ship “Royal Oak,” with 760 officers and men, was anchored at Skapar Harbor. Suddenly, a thunderstruck roar, British warships were buried in the seabed, almost all of the officers and men on board the ship survived. This is a famous example of the victory of Nazi Germany in the Second World War when it launched a torpedo with the “U-47” submarine. During the Second World War, the submarines showed great power and sank hundreds of warships successively. The earliest submarine prototype is a 17th-century Dutch physicist Cornelis Dreier wooden submersible boat design, the hull covered with oiled leather, the ship fitted with sheepskin bag. Sheepskin irrigation, boat sinking; sheepskin bag drainage, floating on the boat.