Abstract: A projectile which is fireable in a spin-stabilized manner from a weapon barrel or launch tube through the action of the gas pressure generated by a propellant charge, and which projectile is guidable during flight. The projectile is equipped in the rearward region of its tail-end structure, and preferably behind the control surfaces, with a type of propulsion cage so as to, through the intermediary of the gas pressure generated by the propellant charge, faciliate a ballistic firing of the projectile from a weapon barrel or launch tube. The projectile is equipped with a sealing ring, which with a gliding frictional contact, coaxially encompasses an axially-limited region of the tail-end structure of the projectile.

Abstract: A method and apparatus are disclosed for guiding and increasing the effect of underwater detonation of an underwater explosive body, characterized in that a hollow space is defined adjacent the explosive body on the side thereof facing the target, whereby upon detonation of the explosive body, gases of high density are generated in the hollow space which are accelerated to high speed prior to meeting with the surrounding water.