This data set was acquired with a ship-based Gravimeter and Subbottom Profiler during Nathaniel B. Palmer expedition NBP9804 conducted in 1998 (Investigator(s): Dr. Dave Leger). These data files are of MGD77 format and include Bathymetry, Gravity (Field and Free Air Anomaly) data that were processed during the cruise. Data were acquired while the Nathaniel B. Palmer was in transit.