An underwater device intended to be deployed in the water, the device includes a set of arms articulated to a support body having a reference axis r, the arms being able to be kept in a furled configuration and able to deploy into a deployed configuration wherein the arms extend about the reference axis r, the arms deploying by distal ends of the arms moving away from the axis r, a set of at least one bending spring stressed elastically in bending when the arms are kept in a furled configuration and able to relax when the arms are released from the furled configuration, the set of at least one bending spring being configured and arranged in such a way as to exert, on at least one of the arms, when the arms are released from the furled configuration, a thrust that instigates the deploying of the arms.

According to a first aspect of the present invention, there is provided a reconnaissance and communication assembly, adapted to be launched from a gun barrel into the air. The assembly comprises a carrier (with a cavity) and a payload (within the cavity). The payload is arranged to be controllably expelled from the carrier and once expelled from the carrier, the payload transmits a signal.

Methods and apparatus for inspecting an underwater vehicle. In embodiments, a system receives a SAR image for at least a portion of an exterior surface of an underwater vehicle and performs CCD processing to compare a baseline SAS image for the underwater vehicle with the received SAR image of the underwater vehicle to generate a CCD output corresponding to a measure of similarity of the baseline SAS image and the received SAS image. The system determines whether there was tampering of the underwater vehicle based on the measure of similarity.

According to a first aspect of the present invention, there is provided a reconnaissance and communication assembly, adapted to be launched from a gun barrel into the air over a body of water. The assembly comprises a carrier (with a cavity) and a payload (within the cavity). The payload is arranged to be controllably expelled from the carrier and once expelled from the carrier, the payload is adapted to enter the water; and the payload transmits a signal after entering the water.

Methods and apparatus for inspecting an underwater vehicle. In embodiments, a system receives a SAR image for at least a portion of an exterior surface of an underwater vehicle and performs CCD processing to compare a baseline SAS image for the underwater vehicle with the received SAR image of the underwater vehicle to generate a CCD output corresponding to a measure of similarity of the baseline SAS image and the received SAS image. The system determines whether there was tampering of the underwater vehicle based on the measure of similarity.

An underwater device intended to be deployed in the water, the device includes a set of arms articulated to a support body having a reference axis r, the arms being able to be kept in a furled configuration and able to deploy into a deployed configuration wherein the arms extend about the reference axis r, the arms deploying by distal ends of the arms moving away from the axis r, a set of at least one bending spring stressed elastically in bending when the arms are kept in a furled configuration and able to relax when the arms are released from the furled configuration, the set of at least one bending spring being configured and arranged in such a way as to exert, on at least one of the arms, when the arms are released from the furled configuration, a thrust that instigates the deploying of the arms.

According to a first aspect of the present invention, there is provided a reconnaissance and communication assembly, adapted to be launched from a gun barrel into the air. The assembly comprises a carrier (with a cavity) and a payload (within the cavity). The payload is arranged to be controllably expelled from the carrier and once expelled from the carrier, the payload transmits a signal.

According to a first aspect of the present invention, there is provided a reconnaissance and communication assembly, adapted to be launched from a gun barrel into the air over a body of water. The assembly comprises a carrier (with a cavity) and a payload (within the cavity). The payload is arranged to be controllably expelled from the carrier and once expelled from the carrier, the payload is adapted to enter the water; and the payload transmits a signal after entering the water.

The present invention is a supercavitation underwater drone equipped with high-speed sensors configured for data acquisition and surveillance. A propulsion system generates gasses that are then used to generate a vapor bubble at the nose of the vehicle. An array of nozzles aids in directional control of the vehicle by altering the pressure profile of the vapor bubble. In some embodiments the vehicle operates autonomously. In other embodiments the vehicle operates semi-autonomously following a preplanned route and communicating with a base. In other embodiments the vehicle is controlled remotely by an operator.