Layback-corrected towfish navigation data collected offshore Galveston, Texas (TRiPP survey, August 2018)

This processed towfish navigation data set was collected in August 2018 onboard R/V Trident 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.