Abstract: A cable connector for connecting marine seismic cables having an electrical conductor and a high tensile strength load transmitting core, comprising a housing having spherical sockets provided in opposite ends thereof, a pair of diametrically opposed grooves extending partially into the inner surface of the spherical sockets and extending longitudinally relative to the housing, strain relief members attached to the cables having substantially spherical ball portions at each end thereof rotatably positioned within the spherical sockets of the housing, and a pair of diametrically opposed pockets in the outer surface of the ball portions arranged to register with the grooves of the spherical sockets. A pair of projections extend from opposite sides of the ball portions and project into the grooves of the spherical sockets whereby the strain relief members are free to simultaneously rotate about the projections and translate along the grooves.

Abstract: An oceanographic sensor which allows in-situ bio-fouling prevention and/or leaning of foreign matter from its surface while simultaneously operating in a sensor mode. The sensor mode is fabricated from crystal substance and utilizes the piezoelectric electric effect. Sensing elements are fabricated on either the outside or inside, or both sides, of the core depending upon what measurements need to be taken. When the sensor is submerged and excited by an electrical potential, at or near resonance, the sensor core will vibrate and remove all foreign matter from its surface. The cleaning and bio-fouling prevention is done concurrently with oceanographic parameter measurements made by the sensor. Also, it should be noted that when the transducer is vibrated at or near its resonant frequency at a level below the cavitation threshold, the transducer and sensor system deters all bio-fouling from adhering to the sensor surface.

Abstract: A spherical sensor having the inside thereof lined with a plurality of terature sensing elements, multiplexing circuitry for sequentially measuring the temperature of said sensors, and a comparison circuit for determining the sensors of greater temperature to thereby derive the direction of fluid flow.