This data set was acquired with a ship-based Atlas Hydrosweep DS Multibeam Sonar system during Maurice Ewing expedition EW9208 conducted in 1992 (Chief Scientist: Dr. Brian Tucholke; Investigator(s): Dr. Martin Kleinrock). These data files are of MBSystem Compatible format and include Swath Bathymetry data and were processed at sea using the open source MB-System multibeam sonar processing software. 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.