System for reducing towing noise in marine seismic survey streamers

A seismic streamer, comprising:

• a jacket covering an exterior of the streamer;
• at least one strength member extending along the length of the jacket, the strength member disposed inside the jacket;
• at least one seismic sensor disposed in an interior of the jacket;
• an acoustically transparent material filling void space in the interior of the jacket, the acoustically transparent material introduced into the jacket in liquid form and undergoing state change to substantially solid form thereafter;
• and
• at least one longitudinally compressible element made from closed cell foam disposed at a selected position along the streamer, the at least one longitudinally compressible element filling substantially all void space within a cross-section of the interior of the jacket to separate the void filling material into two adjacent compartments so as to attenuate transmission of acoustic waves in the material across the element, the longitudinally compressible element including a frame configured to substantially resist compression in a direction transverse to a length of the streamer, and closed cell foam filling void space in the frame so as to provide substantial compressibility in a direction alone the length of the streamer.