Abstract: A method and device for the remote collection of data from aircraft or ship recorders, using a buoy (3) which may be ejected in the event of sinking and contains a double memory which stores the positions of the buoy during the drift thereof as well as information relating to the flight or crossing. A two-way radio communication means allows the buoy to transfer the contents of said memories to a remote collection means, which is a reconnaissance aeroplane.

Abstract: A method and device for the remote collection of data from aircraft or ship recorders, using a buoy (3) which may be ejected in the event of sinking and contains a double memory which stores the positions of the buoy during the drift thereof as well as information relating to the flight or crossing.

Abstract: A seismic streamer incorporates apparatus for controlling its depth of immersion for modifying and maintaining its degree of immersion, wherein, the streamer being designed for stationary use and including a power supply network, the immersion control apparatus comprises a plurality of variable buoyancy ballasts connected to the power supply network of the streamer and installed at regular intervals along the seismic streamer and each associated with a microcontroller for at least controlling buoyancy of the corresponding ballast, a plurality of pressure sensors also installed at regular intervals along the streamer, at least one receiver for one or more desired value instructions, a bus for distributing the one or more desired value instructions to the ballasts, the microcontroller associated with a given ballasts being adapted to receive at least signals originating from at least one pressure sensor located in the proximity of the ballast and instruction signals originating from the receiver for instruction

Abstract: A device for controlling steering of a towed underwater object, in particular a towed linear acoustic antenna. The device comprises a body having a longitudinal axis, the body being provided with a fastener for fastening it releasably to the towed object, and a plurality of stabilizer fins, each of which is coupled to the body and extends along an axis that is transverse to the longitudinal axis of said body, the angular position of each fin relative to the body being pivotable about its transverse axis by control, so as to modify the angles of inclination of said fins.

Abstract: A device for controlling steering of a towed underwater object, in particular a towed linear acoustic antenna includes a body having a longitudinal axis, the body being provided with a fastener for fastening it releasably to the towed object, and a plurality of stabilizer fins, each of which is coupled to the body and extends along an axis that is transverse to the longitudinal axis of the body, the angular position of each fin relative to the body being pivotable about its transverse axis by a controller, so as to modify the angles of inclination of the fins.