This data set was acquired with a Sippican MK21 Expendable BathyThermograph during R/V Nathaniel B. Palmer expedition NBP1704 conducted in 2017 (Chief Scientist: Dr. Stephen Ackley, Investigator: Dr. Stephen Ackley). These data files are of Sippican MK21 Export Data File format and include Temperature data that have not been processed. Funding was provided by NSF award(s): OPP13-41717, OPP15-43483.