Sentinel-3D is a European Space Agency (ESA) satellite mission designed for Earth observation and operational oceanography. The satellite carries a suite of advanced instruments, including radar altimeters, radiometers, and spectrometers, to measure the height of the ocean surface, sea and land surface temperature, and vegetation cover. These measurements are critical for monitoring the Earth`s environment and understanding how it is changing over time. The data collected by Sentinel-3D is used for a variety of applications, including coastal zone management, maritime safety, and weather forecasting. The Sentinel-3D mission is part of the European Copernicus program, a global network of satellites dedicated to monitoring and studying the Earth`s environment. The Sentinel-3 series of satellites provides essential data for improving our understanding of the Earth`s climate, oceans, and land surfaces, and for developing effective strategies for their sustainable use and management.