The dock in the port of Mestre was supported by a mesh of bulkheads and reinforced concrete buttresses 13 metres below sea level. The challenge was to be able to identify the correct position of the bulkheads so as to cut them and bring them to dry land. Despe used a sophisticated SONAR system that recreated a 3D model of the bulkheads on the operator’s screen, from where it was possible to guide a robot with absolute precision during the diamond tool cutting procedure.