b'FOGHORNFOCUS: SHIPBUILDINGDuring its service life, thethe operators expected a carbon ferry toher added construction costs in approx-aluminum ferry burned 228 gallons ofcost more money. imately two to four years, depending diesel per hour, averaging 7.13 gallonsIn the most general terms, a ferry ofon the distance the ferry travels each per nautical mile. When the carboncomparable size and capacity will costyear. The more miles a ferry travels, the fiber ferry took over the same route,more to construct out of carbon thansooner that break-even point occurs.it burned 136 gallons per hour andmetals. Even with tariffs on aluminumGoing back to the example of averaged 4.27 gallons per nautical mile.imported into the United States, thethe two Scandinavian ferries, the Not only did this drop in fuel usagedisparity in costs between carbon andaluminum vessel consumed approxi-result in a 40 percent reduction in CO2metal narrows very little. There aremately 934,800 gallons of diesel fuel per emissions, the carbon fiber ferry imme- initial savings to be found in the loweryear, whereas the new carbon ferrys diately began generating a return oncosts of the smaller engines on a carbonfuel consumption is 557,600 gallons her operators construction investmentvessel; however, even that doesnt com- annually. At a modest price estimate by reducing the ferrys fuel costs by 40pensate for the higher prices of carbon. of $2.25 per gallon, the cost difference percent. The break-even for a carbon fiberbetween the two ferries is $848,400 less Doesnt Carbon Fiber Cost More? ferry versus aluminum occurs once theper year. That savings quickly adds When building carbon fiber ferriesvessel is put into operation. As withup to a dramatic net positive benefit was first proposed in Scandinavia,the ferry in Norway, a carbon ferryduring the ferrys lifetime.ferry operators were initially reticentwill burn significantly less fuel thanThe break-even point likely occurs due to the perceived higher construc- an aluminum one. Taking only fueleven sooner when considering other tion costs. Carbon fiber prices aresavings into consideration, a carbon- benefits. Unlike metals, carbon fiber decidedly higher than metal; naturallyfiber ferry operator will recoup his oris corrosion resistant, which means an POWER AT WORKPotomac Riverboat Co. Potomac Taxi I and IIPowered by twin Scania DI13 081M enginesCompleteand Committed.THE SCANIA MARINE SOLUTION. Out there, confidence in performance, reliability and operating economy are the only things that count. With this in mind, we created the Scania Marine Solution:An array of flexible products paired with guidance andinstallation support from Scania.Whatever your specification, we will provide you with the optimal Scania Marine Solution. Power at work, every inch of the way.www.scaniausa.com18 APRIL 2019FOGHORN'