The air inlets of the gas turbines were optimised to minimise any turbulence and back flow of the exhaust gas on deck and living areas. The bottom of the hull is solid fibreglass. Topsides, from the waterline up, are hybrid fibreglass/carbon composite with balsa core. The deck is a Nomex/full carbon composite. The deck superstructure is made of a carbon frame to which glass panels are glued. The glass is composed of Lexan and a triple laminate of glass. The interior bulkheads and cabin soles carry no structural loads, so they are made of thin wood and laminate veneer skins with cores. The bath fixtures and dining tables are made from carbon composites to reduce weight.