Comparison of Hydrographic Survey Data with Crowdsourced Bathymetry Data

A hydrographic survey is a standardized procedure for collecting data the production of nautical charts and publications. It lengthy costly procedure, so carried out depending on capabilities organizations. known that relatively large parts world's oceans are very poorly covered by surveys. To increase amount collected, International Hydrographic Organization (IHO) has introduced concept crowdsourced bathymetry (CSB). Under CSB concept, all vessels meeting certain minimum technical requirements (carrying global navigation satellite system single beam echo sounder) can participate in voluntary bathymetric collection. The paper analyzes method from CSB. depth collected as part compared with official displayed electronic navigational (ENC) United States America. Four sea areas were selected which 104 depths at same positions, categorization was also made according to criterion importance, i.e., category zones confidence (CATZOC). By comparing public sources their mutual relationships established, it be concluded data, despite its limitations, valuable supplement existing data.