Aiming at the current status that helicopter uses single torpedo to attack submarine, a method of two torpedoes salvo for helicopter hovering attack is presented.

针对直升机投雷一般采用单雷射击的现状，提出了采用直升机悬停双雷齐射的方法。

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Theories to explain the disaster include the explosion of a faulty torpedo in the bow and a collision with another submarine or old anti-shipping mine.

BBC: Kursk investigators examine sub