This data set was acquired with a ship-based Navigation system during Nathaniel B. Palmer expedition NBP0003 conducted in 2000 (Chief Scientist: Dr. Eugene Domack). These data files are of SHP format and include Primary Navigation data and were processed after data collection. Data were acquired as part of the project(s): Prehistory of the Larsen Ice Shelf: Evidence from the Marine Record, and funding was provided by NSF grant(s): OPP98-14383.