Abstract: An aquatic system configured for suspending a structure (2; 9; 20; 21) in a body of water (W), comprising at least two buoyancy control arrangements (15) configured for connection to the structure (2; 9; 20; 21) and to a seabed (B) below the body of water (W). The structure (2; 9; 20; 21) is moored to the seabed (B) via the at least two buoyancy control arrangements (15). Each buoyancy control arrangement (15) comprising a first buoyancy device (4) and a second buoyancy device (3), the buoyancy of each of the first buoyancy devices (4) and each of the second buoyancy devices (3) is independently controllable in order to adjust the vertical and horizontal position of the structure (2; 9; 20; 21) and vertical and horizontal restoring capacity of the aquatic system in the body of water (W).

Abstract: A system and method of tracking individuals divided into flocks by means of radio communication and positioning systems is disclosed. A flock leader is provided with a first electronic device (1) comprising a first transceiver (2) operating in a public radio communication network, e.g. GSM or GPRS, a position tracker (3), e.g. a GPS-receiver, and a second transceiver (4) operating in a short distance radio communication system, e.g. Bluetooth®. Each of the remaining individuals in the flock is provided with a second electronic device (6) comprising at least a third transceiver (7) also operating in the short distance radio communication system. The second electronic device (6) periodically transmits data identifying the associated individual to the first electronic device (1), so that the flock leader knows that the individual is localized in the flock (i.e. within the coverage area of the short distance radio communication system) as long as it receives the data.

Abstract: A system and method of tracking individuals divided into flocks by means of radio communication and positioning systems is disclosed. A flock leader is provided with a first electronic device (1) comprising a first transceiver (2) operating in a public radio communication network, e.g. GSM or GPRS, a position tracker (3), e.g. a GPS-receiver, and a second transceiver (4) operating in a short distance radio communication system, e.g. Bluetooth®. Each of the remaining individuals in the flock is provided with a second electronic device (6) comprising at least a third transceiver (7) also operating in the short distance radio communication system. The second electronic device (6) periodically transmits data identifying the associated individual to the first electronic device (1), so that the flock leader knows that the individual is localized in the flock (i.e. within the coverage area of the short distance radio communication system) as long as it receives the data.