This dataset includes (1) A 1D P-wave velocity model file (vfs.mat), after Mochizuki et al. (2019, https://doi.org/10.1130/G46250.1), that was used to convert two-way traveltime picks to depth. MATLAB vectors are tt - two-way traveltime, vrms - RMS velocity for two-way time, zz - depth interval, and vv - depth interval velocity. (2) Total sediment thickness in meters (sed_thickness.txt), between the seafloor and basement interface (HKB). Columns are 1: longitude, 2: latitude, and 3: sediment thickness (meters). (3) Basement (HKB) depth in meters below sea level (basement.txt). Columns are 1: longitude, 2: latitude, and 3: basement depth in meters. (4) A Generic Mapping Tools grid file of total sediment thickness, created with the nearest neighbor algorithm (nn_sed_thickness.nc). (5) A Generic Mapping Tools grid file of basement depth, created with the nearest neighbor alogrithm (nn_basement_depth.nc).