Abstract: The invention relates to an underwater antenna device with a nonstationary antenna, an extension mechanism and a repositioning mechanism, wherein an extending force can be applied in a direction of the extending force by the extension mechanism of the antenna and an opposing force can be applied in a direction of the opposing force, in the opposite direction to the extending force by the repositioning mechanism of the antenna, characterized in that the repositioning mechanism or a part of the repositioning mechanism is designed as selectively nonstationary, so that, by selected changes to the position, the antenna can be positioned in a retracted position, an extended position or an intermediate position.

Abstract: The invention relates to an activation device for an electric battery unit, in particular, for a battery part of a torpedo. The invention also relates to a battery unit with activation devices of this type. An activation device incorporates an operating supply connection, to which an operating supply reservoir can be connected. A movably arranged cutting element can be pneumatically actuated via a pneumatic connection of the activation device by means of an actuation element, wherein a sealing element arranged in the path of travel of the cutting element controls the operating supply connection. In order to guarantee a safe storage, ready for operation, and a safe activation of a battery unit, it is provided in accordance with the invention that the activation device incorporates a pneumatic outlet, which can be fluidically connected to the pneumatic connection, depending on the position of the actuation element.

Abstract: The invention relates to a locking device for a pressure reservoir. The invention also relates to a torpedo with a pressure reservoir with a locking device of this type and the use of a locking device of this type for the pressure reservoir of a torpedo. The locking device (1) has an inlet side (3) and an outlet side (4), together with a locking element, which fluidically controls a connection between the inlet side (3) and the outlet side (4). Further, the locking device (1) has an actuator (11) to actuate the locking element. In order to guarantee the envisaged operating pressure in the pressure reservoir, even after several years' storage, it is provided in accordance with the invention that the locking element is a sealing membrane (5) and the actuator (11) has an opening spike (12), arranged so as to be movable, in whose path of travel the sealing membrane (5) is located.

Abstract: The invention relates to an activation device for an electric battery unit, in particular, for a battery part of a torpedo. The invention also relates to a battery unit with activation devices of this type. An activation device 1 incorporates an operating supply connection 34, to which an operating supply reservoir can be connected. A movably arranged cutting element 38 can be pneumatically actuated via a pneumatic connection 43 of the activation device 1 by means of an actuation element 42, wherein a sealing element 36 arranged in the path of travel of the cutting element 38 controls the operating supply connection 34. In order to guarantee a safe storage, ready for operation, and a safe activation of a battery unit, it is provided in accordance with the invention that the activation device 1 incorporates a pneumatic outlet 44, which can be fluidically connected to the pneumatic connection 43, depending on the position of the actuation element 42.

Abstract: The invention relates to an underwater antenna device with a nonstationary antenna, an extension mechanism and a repositioning mechanism, wherein an extending force can be applied in a direction of the extending force by the extension mechanism of the antenna and an opposing force can be applied in a direction of the opposing force, in the opposite direction to the extending force by the repositioning mechanism of the antenna, characterized in that the repositioning mechanism or a part of the repositioning mechanism is designed as selectively nonstationary, so that, by selected changes to the position, the antenna can be positioned in a retracted position, an extended position or an intermediate position.