The Negri Company has demolished and replaced the 1DE and 2DE pontoons of the Gruissan marina in Aude. These pontoons of 152ml and 210ml respectively, initially made of reinforced concrete, were removed and evacuated and replaced by floating pontoons. In addition, a 100m floating breakwater was created. For the creation of these floating pontoons 49 piles diam. 473 mm of 13.5 m were put in place.