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Legend (IHO/GEBCO_TID)

GEBCO_2023 TID (0)
Singlebeam Singlebeam
Multibeam Multibeam
Seismic Seismic
Isolated sounding Isolated sounding
ENC sounding ENC sounding
Lidar Lidar
Depth measured by optical light sensor Depth measured by optical light sensor
Combination of direct measurement methods Combination of direct measurement methods
Predicted based on satellite-derived gravity data Predicted based on satellite-derived gravity data
Interpolated (computer algorithm/GMT) Interpolated (computer algorithm/GMT)
Digitized contour Digitized contour
Bathymetric sounding within gridded dataset Bathymetric sounding within gridded dataset
Pre-generated grid Pre-generated grid
Unknown source Unknown source
Steering points Steering points