This data set was acquired with a ship-based Navigation system during Laurence M. Gould expedition LMG0909 conducted in 2009 (Chief Scientist: Dr. Colm Sweeney). These data files are of MGDS:Nav format and include Primary Navigation data and were processed after data collection. Data were acquired as part of the project(s): Palmer Station Opening, and funding was provided by NSF grant(s): ANT06-36975.