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  • The DTM is produced with Teledyne multibeam echosounder survey, acquired in March 2023 by Marine Research Ltd. The resolution 5m x 5m. It is located at Sulina, Romania, on the coastal region of the Black Sea. Depths are referenced to the Local Sea Level - Marea Neagra 1975 (Mean Sea Level) and the coordinates are expressed into the WGS84 reference frame.

  • Hydrographic survey performed by the Portuguese Hydrographic Institute (IHPT) using echosounders. The depth values are referred to the Portuguese Chart Datum.

  • Hydrographic survey performed by the Portuguese Hydrographic Institute (IHPT) using echosounders. The depth values are referred to the Portuguese Chart Datum.

  • Hydrographic survey performed by the Portuguese Hydrographic Institute (IHPT) using echosounders. The depth values are referred to the Portuguese Chart Datum.

  • Hydrographic survey performed by the Portuguese Hydrographic Institute (IHPT) using echosounders. The depth values are referred to the Portuguese Chart Datum.

  • Hydrographic survey performed by the Portuguese Hydrographic Institute (IHPT) using echosounders. The depth values are referred to the Portuguese Chart Datum.

  • Hydrographic survey performed by the Portuguese Hydrographic Institute (IHPT) using echosounders. The depth values are referred to the Portuguese Chart Datum.

  • Hydrographic survey performed by the Portuguese Hydrographic Institute (IHPT) using echosounders. The depth values are referred to the Portuguese Chart Datum.