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Multibeam Bathymetry Database (MBBDB) NGDA 21 recent views
Originally designed for military use, the multibeam echosounder has proved very useful for nautical charting, oceanographic research and modeling, habitat classification,... -
Marine Trackline Geophysical Database NGDA
This data set contains bathymetry, magnetic, gravity and seismic shot point navigation data collected during marine cruises from 1939 to the present. Coverage is worldwide.... -
NOS Hydrographic Surveys Collection NGDA
The National Oceanic and Atmospheric Administration (NOAA) has the statutory mandate to collect hydrographic data in support of nautical chart compilation for safe navigation...