This data set was acquired with a ship-based Gravimeter, Magnetometer, and Echosounder during Robert D. Conrad expedition RC1714 conducted in 1974 (Chief Scientist: Dr. Steve Cande). These data files are of MGD77 format and include Gravity Field, Singlebeam Bathymetry, and Magnetic Field data that were processed after data collection. Funding was provided by NSF grant(s): N00014-67-A-0108-0004.