Based on three existing modular pontoons,it was realized the basic project for the construction and assembly of 4 towers that will provide buoyancy and stability while the caisson construction.
Steel Project, stability calculations, and checking of the lightweight of three modular pontoons after the increase of breadth and length dimensions, allowing the construction of a bigger caissons.
To refloat some damaged and sunked concrete caissons because a rough weather at the Prats dock, in Barcelona, COTENAVAL devised a system composed of the pontoons Cyes PC-UNO y PC-TRES and PC-TRES and a serie of floaring system with winches and pulleys.