Abstract: A towed array streamer including a buoyant core, a data bearer layer, longitudinally positioned strain members and at least an outer jacket in which a strain member support has provided in it a series of longitudinally running grooves accommodating strain members to confine the position of the strain members in the streamer.

Abstract: A towed streamer having a buoyant core, a data bearer layer surrounding the buoyant core, an inner jacket layer formed of a resilient material surrounding the data bearer layer, and an outer jacket layer surrounding the inner jacket layer, wherein a series of longitudinally positioned strength members are embedded in the inner jacket layer to extend along the streamer to transmit tension along the streamer while the streamer is held in the inner jacket layer.

Abstract: A distributed array hydrophone comprising an array of hydrophones each comprising a ceramic doublet assembly of hollow radially oppositely polarized members end held in a bobbin by decoupling means, the bobbins being linearly interconnected by semiflexible spacing members, the array being encapsulated in a vibration transmitting potting medium in a tube formed of a pressure-wave transmitting medium.

Abstract: A method and apparatus for reducing acoustic noise associated with the release of gases from a submerged device, such as a sea water battery. A flat piece of material, preferably polyurethane, is mounted onto the top of the device. The piece of material is provided with an outwardly extending lip on the lower surface thereof adjacent an outlet port through which the gases issue. The lower surface of the lip is preferably curved upwardly and outwardly away from the outlet port and is disposed immediately at the upper edge of the outlet port. Gas emitted from the outlet port immediately forms bubbles on the lower surface of the lip, and the bubbles so formed pass outwardly and upwardly along the lower surface and subsequently escape into the free water.