This data set was acquired with a ship-based Kongsberg EM120 Multibeam Sonar system during Nathaniel B. Palmer expedition NBP0502 conducted in 2005 (Chief Scientist: Dr. Julia Smith Wellner). These data files include Swath Bathymetry images that have not been processed. Data were acquired as part of the project(s): Shallow Drilling on the Antarctic Continential Margin (SHALDRIL), and funding was provided by NSF grant(s): ANT01-25480, ANT01-25526, ANT01-25562, and ANT01-25922.