This data set was acquired with a ship-based Navigation system during Nathaniel B. Palmer expedition NBP0608 conducted in 2006 (Chief Scientist: Dr. Giacomo DiTullio). 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): Interaction of iron, light and CO2 on phytoplankton community dynamics in the Ross Sea., and funding was provided by NSF grant(s): ANT03-38097.