溯鱼雷之始认为武器也。命中范围不过四分之一英里。故必先求接近敌舰 。自高速率之鱼雷艇发明也。鱼雷艇之攻敌舰 。或以音。或以群。应机而动昏夜之中。每以单支出奇制胜。否则以多为胜惟志在命中敌舰。鱼雷艇之损失不计也。于是灭鱼雷艇发明。为攻守之利器。速率之大驾鱼雷 The beginning of the torpedo that weapons. Hit range but only a quarter mile. Therefore, we must first approaching enemy ships. Since the high rate of torpedo boats invented too. Torpedo boats attack enemy ships. Or to tone. Or in groups. Opportunity and moving overnight. Oddly won every single spending. Otherwise, win over the enemy enemy ship. The loss of torpedo boat is also not counted too. So the torpedo boat invented. A defensive weapon. Speed ​​of the torpedo