The use of side-scan sonar for localizing and inspecting rigs
The BIAS Project has investigate the use of side-scan sonar in inspecting and finding rigs. The study was performed in Polish water where trawling is frequently occurring. One of the rigs where lost. It was localized by using side-scan sonar. The rig was later retrieved by divers using the location obtained from the side-scan sonar. The conclusion is that side-scan sonar is an effective mean to find lost rigs, especially when trawls have moved the rig a fair distance from the deployment position.