Abstract: A method for measuring water-flow noise over a hydrophone comprising: coupling the hydrophone to a distal end of a hydrodynamic-drag-reduced beam, which has a proximal end that is rotatably connected to a frame; pivoting the beam through water; and recording the water-flow noise generated by the water flowing around the hydrophone.

Abstract: A water flow noise measuring apparatus comprising: a frame; a beam comprising a distal and a proximal end, where the proximal end is pivotably coupled to the frame; a hydrophone capable of detecting water flow noise and generating water flow noise data, where the hydrophone is coupled to the beam at a predetermined distance from the proximal end; an angular displacement sensor capable of detecting the angular displacement of the beam with respect to the frame and generating a displacement detection signal, where the angular displacement sensor is operably coupled to the beam and the frame; and a computer capable of receiving the water flow noise data and the displacement detection signal, determining the tangential velocity of the hydrophone from the displacement detection signal, and generating an output signal representing the water flow noise data as a function of the tangential velocity.

Abstract: A fiber optic cable splice places a hot-melt adhesive tube over fused fibers, bare buffer, bare strength member and part of the protective jacket of each cable joined. A heat shrink tube is disposed over the hot-melt tube and an elongated strengthening rod is inserted between these tubes, extending longitudinally for equal lengths beyond the tubes. The hot-melt adhesive tube and heat shrink tube are heated to seal the hot-melt adhesive around the fused fibers, bare buffer, bare strength member and portions of the outer protective jacket of each cable and to shrink the heat shrink tube to bind the rod to the hot-melt tube and its enclosed contents. The cable is helically wound around the lengths of the rod extending beyond the inner tubes and an outer heat shrink tube is shrunk to bind the rod to the joined cable, the inner heat shrink tube and its enclosed contents.

Abstract: A fiberoptic cable junction for joining the ends of two fiberoptic cables mprises the steps of inserting a tube fastener over each cable end and inserting a protective sleeve and a splint fastener over either cable end. The cable ends are then spliced together. The protective sleeve is positioned over the splice and is supported by fastening an inner splint rod to the cable buffer with the tube fasteners. The cable buffer is supported by an outer splint rod fastened to the tube fasteners by the splint fastener.

Abstract: Two sets of cylindrical fingers disposed in an interdigital relationship pivoted together, scissors fashion, to receive a portion of an optical fiber cable. When the fingers are rotated to a closed position, they create a predetermined series of bends in the portion of the optical fiber cable that can be observed by an optical time domain reflectometer. This observation allows a remote monitor to determine the relative location of the bends with respect to a suspected break or other anomaly in the optical fiber cable so that a maintenance or repair crew can go directly to the location of the anomaly for quick action.