This data set was acquired with a ship-based Navigation system during Laurence M. Gould expedition LMG0404 conducted in 2004 (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): Collaborative Research: Paleohistory of the Larsen Ice Shelf: Phase II, Consortium on the Ocean's Role in Climate (CORC), and AbRupt climate CHangE Studies (ARCHES), and funding was provided by NSF grant(s): ANT03-38142.