Adede has experience of working on offshore wind projects. The first stage is historical research to establish a risk mitigation strategy and a survey technique suited to locate the type of UXO that poses a threat in the project area.
The second stage consists of a combined remotely operated towed vehicle (ROTV) magnetometry/side scan sonar survey for deep areas and a similar survey by autonomous underwater vehicles (AUV) for shallow or confined sections of the project area.
Survey data will result in a preselection of targets that will be inspected by ROV or by a diver, depending on circumstances at the location.
If UXO is found, it can either be removed or detonated on site by means of a charge placed by ROV or a diver. Depending on the circumstances a cable reroute could be advised as well, whatever is most cost effective.
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