This data set was acquired with a ship-based Kongsberg EM120 Multibeam Sonar system during Nathaniel B. Palmer expedition NBP0301 conducted in 2003 (Chief Scientist: Dr. Lou Bartek; Investigator(s): Dr. Bruce Luyendyk). These data files are of MBSystem Compatible format and include Acoustic Backscatter, Swath Bathymetry, and Sidescan data that have not been processed. Data were acquired as part of the project(s): Transit, and funding was provided by NSF grant(s): OPP00-87392.