The Sagres system are hot-dip galvanized steel floating pontoons, composed of modular units suitable for use in coastal marinas or exposed inland waters; optionally, and for increased protection the structure, can be painted after galvanizing. Service ducts are provided on both sides of all walkways as standard. Duct covers are made of anodised aluminium (optionally can be equipped with PVC) . These systems are recommended for semi-sheltered areas in protected basins and was developed as an evolution of standard equipment installed by Lindley with satisfactory performance over the last thirty years.