fleetsubmarine,anti-submarine

945a sierra ii class submarine pskov returns to northern fleet
海上"达芬奇"带来的不是微笑,浅说意大利"马可尼"级潜艇
sonar equipped drone fleets could be key to future submarine
中国最新型潜艇展示强大技术实力 或助巴铁海军逆袭
去夏威夷找寻停泊的岛屿舰队!