This data set was acquired with a ship-based Kongsberg EM120 Multibeam Sonar system during Nathaniel B. Palmer expedition NBP0403 conducted in 2004 (Chief Scientist: Dr. Steve Cande; Investigator(s): Dr. Steve Cande and Dr. Joann Stock). 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): Late Cretaceous and Cenozoic Reconstructions of the Southwest Pacific, and funding was provided by NSF grant(s): OPP01-26334, OPP01-26340, and ANT03-38317.