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Satellite-Derived Bathymetry (SDB) modeling is used to derive bathymetric data needed for enriching several applications including nautical charting. The nautical charts of Safaga port, Egypt, contains significant gaps as they are based on 50-years old hydrographic survey data and it needs an update. We applied the SDB algorithm (log-ratio approach) using multispectral Landsat-8 OLI images for extracting bathymetry to update the nautical charts of SAFAGA port. The results are verified against the old nautical chart of SAFAGA with a coefficient of determination (R 2 ) varies between 0.42 to 0.71 in areas where hydrographic data are old, unavailable or costly to obtain.

Satellite-Derived Bathymetry Using Landsat-8 Imagery for Safaga Coastal Zone, Egypt