This data set was acquired with a ship-based Navigation system during Nathaniel B. Palmer expedition NBP9905 conducted in 1999 (Chief Scientist: Dr. Douglas Wiens). 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): A Broadband Seismic Experiment for Study of the Tectonics and Structure of the Antarctic Peninsula and Scotia Plate and Study of the Structure and Tectonics in the Bransfield Strait Area, and funding was provided by NSF grant(s): OPP97-26180 and ANT98-14622.