This data set was acquired with a ship-based Navigation system during Laurence M. Gould expedition LMG0602 conducted in 2006 (Chief Scientist: Dr. Laurence Madin). 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): Salpa thompsoni in the Southern Ocean: Bioenergetics, population dynamics and biogeochemical impact, and funding was provided by NSF grant(s): ANT03-38090.