1915年英德两国海军交战正酣。这年10月的一天,英军观察哨发现一艘挂着德军旗帜的潜艇浮出海面,奇怪的是这艘潜艇既不航行也不下潜,而是长期在原地不动地漂浮在海面,因此英军迅速派出几艘猎潜艇包抄了这艘奇怪的敌潜艇。然而,更奇怪的是,英国海军的猎潜艇眼看已经接近攻击距离了,不仅 1915 Anglo-German Navy fighting in full swing. One day in October of this year, a British military observation post found a submarine with a German flag hanging on the surface of the sea. It is strange that this submarine neither sailed nor dived, but floated on the surface for a long time. Therefore, The military quickly dispatched several hunting submarines to pack this strange enemy submarine. However, even more strange is that the British Navy’s hunting submarine has been close to the attack distance, not only