Mavi Deniz’s marine systems operation provides “steel” Navigation Buoys or “resilient polyethylene foam” Navigation Buoys in a wide range of diameters and net buoyancies. The buoy bodies can be supplied on their own or with the addition of navigation equipment, including but not limiting to beacons, solar powered or dry cell batteries, radar reflectors. A complete range of IALA compliant, low maintenance, robust buoys from 1.25 to 3.6m diameter and providing a realistic alternative to traditional steel buoys. These modular buoys are lighter, easily transported, less maintenance and can be deployed using smaller support vessels. The Hull sections and superstructure are manufactured from ‘UV’ stable, Virgin Polyethylene. The superstructure is made using a unique, ‘twin skin’ construction technique while the Hull sections are filled with water resistant foam which prevents sinking. The Hull sections are fitted around a fully integrated, HDG steel core incorporating both mooring and lifting eyes. The flat base design ensures that the Buoys are easily stored upright and also adaptable to ‘dry out’ situations. The hull sections are also resistant to impact and provide a limited ‘self-fendering’ position.