This data set was acquired with a ship-based Atlas Hydrosweep DS Multibeam Sonar system during Maurice Ewing expedition EW9201 conducted in 1992 (Chief Scientist: Dr. Steve Cande; Investigator(s): Dr. William Haxby). 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): A High Resolution Plate Kinematic Flowline of the Pacific-Antarctic Ridge, and funding was provided by NSF grant(s): OCE91-03573.