This data set was acquired with a ship-based Navigation system during Maurice Ewing expedition EW0008 conducted in 2000 (Chief Scientist: Dr. W. Steven Holbrook). These data files are of Text File (ASCII) format and include Navigation data and were processed after data collection. Data were acquired as part of the project(s): Three-Dimensional Structure and Physical Properties of a Methane Hydrate Deposit and Methane Gas Reservoir, Blake Ridge, and funding was provided by NSF grant(s): EYXX-X-XX-XXXXX and OCE99-10966.