This data set was acquired with a ship-based Navigation system during Nathaniel B. Palmer expedition NBP0902 conducted in 2009 (Chief Scientist: Dr. Ken L. Smith). 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): Free drifting icebergs: Influence of floating islands on pelagic ecosystems in the Weddell Sea, and funding was provided by NSF grant(s): ANT06-50034.