Cooling Water Inlet Survey 13 October 2023 /Posted byStephen Lainson / 0 Case Studies A 3D SONAR seabed survey is regularly taken on a pair of underwater cooling pipes to monitor for any silt build up around the open ends. The information is provided to the dive team for them to plan the any de-siltation required. Download PDF About the author: Stephen Lainson Stephen is the Managing Director of Fortis Remote Technology, a Mechanical Engineering business, in Cumbria.