Abstract: A connector is provided, which is configured for being connected to a similar connector. The connector has a global cylindrical shape around a longitudinal axis and includes a connection zone having comprising at least one electrical contact. A housing extends at least partly around the connection zone and has at least two projecting members. A cylindrical locking nut surrounds the housing and is at least partly movable relative to the housing. The housing and the locking nut are configured for respectively cooperating with corresponding locking nut and housing of the similar connector.

Abstract: A stress-relief device is provided, which is configured for being mounted on a geophysical equipment or node connected to at least two cables. The device includes a case configured for surrounding the geophysical equipment or node and for making at least an opening for enabling a connection between each of the at least two cables and the geophysical equipment or node. The device also includes a housing for housing a portion of each of the two cables, the housing being configured for substantially preventing any movement of said portions of the two cables.

Abstract: A method and apparatus are provided for estimating an inter-node distance between a sender node and a receiver node belonging to a network comprising a plurality of nodes arranged along towed acoustic linear antennas. An acoustic signal is transmitted from the sender node to the receiver node through an underwater acoustic channel. The method includes estimating the inter-node distance as a function of an estimate of a sound speed profile of the underwater acoustic channel, the sound speed profile depending on depth.

Abstract: A method and apparatus are provided for managing the acoustic performances of a network of acoustic nodes arranged along towed acoustic linear antennas. The network of acoustic nodes is adapted to determine inter-node distances allowing to locate the acoustic linear antennas. The method includes: obtaining a determined layout of the network of acoustic nodes; obtaining at least one marine environment property relating to an area of performance of a survey with the network of acoustic nodes; and quantifying the acoustic performances of the network of acoustic nodes, using a sound propagation model, the at least one marine environment property and the determined layout.

Abstract: Method and land-based system for generating seismic signals. The system includes a vehicle configured to move to a desired location above ground, the vehicle having a first end and a second end, opposite to the first end; a vibratory source configured to generate seismic waves into the ground; a lifting system connecting the first end of the vehicle to the vibratory source and configured to lift or lower the vibratory source relative to the ground; and a balancing device connected to the second end of the vehicle and configured to lift the second end of the vehicle from the ground.

Abstract: The present invention relates to an underwater floating device (1) characterized in that it comprises: an insert (4) comprising a thermoplastic material and a hollow tube (7), a foam (5) of a thermoplastic material, at least partly covering the insert (4), an outer skin (6) comprising a thermoplastic material formed by injection molding over the foam and configured for being in contact with water during use.