This data set was acquired with a ship-based Navigation system during Maurice Ewing expedition EW9208 conducted in 1992 (Chief Scientist: Dr. Brian Tucholke). These data files are of Shapefile format and include Navigation data and were processed after data collection. Data were acquired as part of the project(s): Morphological and geophysical investigation of Western North Atlantic Crustal Structure, and funding was provided by NSF grant(s): N00014-90-J-1621.