This data set was acquired with a ship-based Trimble 20636-00SM Navigation system, Seatex Seapath200 Navigation system, and Yokogawa Gyro Navigation system during Nathaniel B. Palmer expedition NBP0507 conducted in 2005 (Chief Scientist: Dr. Marcel Croon). These data files are of MGDS:Nav format and include Primary Navigation data and were processed after data collection. Funding was provided by NSF grant(s): ANT03-38317 and OPP03-38346.