Page 27: of Marine News Magazine (September 2011)

www.marinelink.com MN27Table 1: Greenship Considerations Design Downstream ConsiderationBenefit Hull Design Select a hull design that has been optimized for efficiency with a CFD (computational fluid dynamics) analysis. Hull MaterialThe recyclability of aluminum has been embraced and Alcoa estimates that 75% of all aluminum ever produced is still in use today. Propulsion System Seek the most efficient, consider physical size and weight. Bottom Paint New coatings are kinder to fish, remove marine growth, and enhance vessel performance. Fuel SystemAn accurate and finely tuned fuel flow meter can help operators hone in on the most economical cruising speed.ExhaustAfter treatment systems and particulate filters are commercially available and substantially reduce harmful emissions Windows Consider tinted glass, dual pane construction, and UV-resistant window film to mitigate heat gain and loss. Interior FinishingRequest flooring and upholstery made with sustainable materials like wool or from recycled content. Wall coverings and furniture made from aluminum honeycomb panels are lightweight, long lasting, and recyclable. LightingInvesting in LED lighting is more expensive than compact fluorescents, but power use is low, bulb life is long, and they have very low impact on heat gain.Waste A wide range of zero discharge and wastewater treatment systems are readily available. For other refuse, consider installing trash compactors and allocating space for an onboard recycling station. MN#9 (18-31):MN 2011 Layouts 9/6/2011 12:01 PM Page 27