Side Scan is a specific type of sonar system, using fan shaped beams, which are used to efficiently create an image of large areas of the sea floor. The technique can be used in conjunction with seafloor sampling to show differences in the texture and specific seabed types. Surveys can be used to determine sand winning areas for dredging and construction projects or for sand extraction lease surveys. The team also use side scan systems to determine and delineate safe anchorage areas for sea going shipping.