Not far form Malamocco, in the conjested zone of Venice Lido, it was necessary to signal the navigable canal, while work on the consolidation and safety connected to the Mose project was under way at the mouth of the port. For this, The Grandi Lavori Fincosit company, which contracted the work from the New Venice Consortium, ordered eleven signalling megabuoys.
There were FP 400 type light buoys with a diameter of 2.5 metres and fitted with lanterns fed by rechargable batteries with solar panels and top mark with radar reflectors. Every buoy is made up of three troncoconical modules in rotomoulded polyethylene and filled with polyurethane foam.They are painted either in red or green depending on their positioning point and the lantern is placed in such a way as to have a 4 metre focal plane.