This data set was acquired with a ship-based Navigation system during Laurence M. Gould expedition LMG0201A conducted in 2002 (Chief Scientist: Dr. Robert Beardsley). 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): SO GLOBEC:Circulation and Water Property Evolution and SO GLOBEC:Mysticete Whale Acoustic Census in the GLOBEC West Antarctic Project Area, and funding was provided by NSF grant(s): ANT99-10007.