Layback-corrected towfish navigation data collected offshore Galveston, Texas (TRiPP survey, May 2017)

This processed towfish navigation data set was collected in May 2017 as part of the Trinity River Paleovalley Project (TRiPP). As the sub-bottom data was acquired, the position of the vessel was continuously determined by a differential GPS system with an antenna mounted at the stern of the ship, near the tow point. A layback correction for the ~5 m offset between the towfish and the D-GPS antenna has been applied to these navigation files. The navigation data files are in ASCII comma-separated format. Funding for the project was provided by the U.S. Department of the Interior, Bureau of Ocean Energy Management, under Agreement Number M16AC00020.