Patent ID: 8787111

Claim:
A method for performing a marine seismic survey, comprising: deploying into the water from a tow vessel a carrier rope comprising an outer deflector urging the deployed carrier rope laterally relative to the path of the moving tow vessel; positioning a first seismic streamer in the water from the deployed carrier rope, wherein a first streamer-connector moveably connects the first seismic streamer to the deployed carrier rope and the positioning comprises moving the first streamer-connector laterally along the deployed carrier rope; positioning a second seismic streamer in the water from the deployed carrier rope laterally-spaced from the first seismic streamer, wherein a second streamer-connector moveably connects the second seismic streamer to the deployed carrier rope and the positioning comprises moving the second streamer-connector laterally along the deployed carrier rope; towing the laterally-spaced seismic streamers from the carrier rope over a survey area; repositioning one of the first seismic streamer and the second seismic streamer while towing the first seismic streamer and the second seismic streamer from the carrier rope over the survey area, the repositioning comprising moving the one of the first seismic streamer and the second seismic streamer laterally along the deployed carrier rope independent of movement of the other of the first seismic streamer and the second seismic streamer along the deployed carrier rope; and conducting marine seismic survey operations while towing the laterally spaced seismic streamers over the survey area.