This data set was acquired with a ship-based Gravimeter, Echosounder Sonar, and Magnetometer during Eltanin expedition ELT32 conducted in 1967 (Chief Scientist: Dr. Kendall N. Moulton). These data files are of MGD77 format and include Gravity Field, Magnetic Field, and Singlebeam Bathymetry data and were processed after data collection.