在一个相当长的时期内,海军中的火炮和装甲之间进行了激烈的角逐:火炮口径迅速增大,舰船装甲不断加厚。当装甲的厚度和坚硬度发展到使炮弹难以击穿时,一种能够发送巨大威力弹体的新式武器——自行水雷,即后来被称为鱼雷的武器就应运而生了。十八世纪七十年代,鱼雷开始装备水面舰艇,二十世纪初,装备潜艇。鱼雷最初是放在小艇龙骨下或被拖着的木筏上面的专门管子内的。俄土战争中,两艘俄国小艇,于1878年1月14日,各发射一枚鱼雷, During a fairly long period of intense competition between artillery and armor in the Navy, artillery caliber increased rapidly and ship armor was thickened. When the thickness and stiffness of armor evolved to make it difficult to penetrate a shell, a new type of weapon, the Self-Owned Mine, that later became known as a torpedo came into being. In the 1870s, torpedoes began to equip surface ships. In the early twentieth century, submarines were equipped. The torpedo was originally placed in a special pipe under the keel of a boat or on a raft that was towed. In the Russo-Turkish War, two Russian boats, each firing a torpedo on January 14, 1878,