This data set was acquired with a Echosounder, Navigation System and Gravimeter during R/V Nathaniel B. Palmer expedition NBP1609 conducted in 2016 (Chief Scientist: Dr. Sébastien Bigorre, Investigator: Dr. Sébastien Bigorre). These data files are of MGD77 format and include Bathymetry, Gravity Field, Gravity Free Air Anomaly and Navigation data that were processed after acquisition.