[citation needed] SAES has developed an active diver detection sonar DDS-03 that has been specifically designed for the detection of underwater threats such as divers and crewed and uncrewed underwater vehicles (SDV, ROV or UUV), offering protection and surveillance to counter the threat of underwater attacks against harbours, critical facilities, ships, offshore platforms, coastal power plants, shipwrecks, environmentally protected areas and maritime special events.
The same system can be mounted on remotely operated vehicles (ROVs) to create 3D ship hull scans detecting small mine size objects.
Like other systems, such as the Cerberus or DDS-03 are semi-intelligent and can distinguish humans from marine animals, partly because of their different shapes and typical movements underwater.
This is not impeded by darkness or fog or low underwater visibility, and is a great improvement on scanning the water surface by eye from above.
)[citation needed] Other Anti-Swimmer-based systems that have been invented, instead of shock-waves, use sound-waves which 'disrupt' the diver causing sickness and disorientation.