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Feature 2 | PASSENGER AND FREIGHT FERRIES Incat targets fast freight


Ecoship 130 is aimed at satisfying both the green regulations, and the economic imperatives that drive modern shipping. Fast turnarounds and a light weight are the hallmark of Incat’s latest catarmaran. David Tinsley reports.


A


n accent on environmental features, in conjunction with optimisation to more moderate


service speeds and new scale economies, distinguishes the latest and largest offering from Australian wave piercing catamaran technology specialist Incat. Increased freight loading capability and transport efficiency are complemented by the design’s faster turnround potential. Prepared by Revolution Design for


construction at Incat’s main yard in Tasmania, the ecoship 130 marks a seminal point in the evolution of lightweight fast vessels. While it has the raw power to make 39knots or so in a lightly loaded state, the design has been optimised for economic operation at speeds of up to 30knots, while carrying full vehicular payloads. On 130.5m overall, there is capacity for


46 articulated goods vehicles on the main deck, compared to 28 on Incat’s previously


TECHNICAL PARTICULARS Incat ecoship 130


Builder ..................................Incat Tasmania Designer ..........................Revolution Design Length overall ...................................130.5m Length, waterline ..............................123.6m Beam ....................................................31.2m Beam, individual hulls ...........................6.0m Draught, approx ...................................4.0m Deadweight ....................................1700dwt Complement, passengers + crew ...... 1000 Main deck freight capacity ..................... 46 articulated units @16.5m + 1 truck @10.4m


Upper vehicle deck capacity .......214 cars @4.5m or 184 vans @5.1m


Main engines...............4 x MAN 20V28/33D Main engine power ................... 4 x 9000kW Propulsion power, total ................36,000kW Speed, maximum ............................ 39knots Speed, economic, 1700t@90% MCR ............................ 29knots Class ................................Det Norske Veritas


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Exceptionally fast turnarounds are promised by Incat’s ecoship 130, which offers a major advance in freight capacity over previous wave piercers.


largest wave piercer delivery, the 112m Norman Arrow. In addition to the very significant increase in the number of truck-trailer combinations provided for by the ecoship design, there is also laneage for 214 cars or 184 vans, or any corresponding mix, on the dedicated upper vehicle deck. Te passenger spaces surmount the ro-ro decks, and can be configured to clients’ specific requirements. Total passenger and crew complement will be around 1000. Another advance is the incorporation of


double-deck bow and stern access to effect full-load port turnrounds in just 15 minutes where compatible shoreside facilities are available. Te dual levels, allowing heavy vehicles to work on and off the main deck at the same time as, and separate from, the handling of cars on the fixed deck above, also promote safety and convenience by ensuring that car passengers are isolated from commercial vehicles. Incat emphasised the need for


improvements at the interface so as to maximise the economic and environmental advantages that can flow from prudent and innovative ship designs: “Speed reduction is beneficial in terms of reducing emissions and improving efficiency, but the real effectiveness of such a scheme depends on the possibility of reducing port time as well. Tis means that the role of ports


is of paramount importance for overall ship emissions. Te dual level bow and stern loading of the ecoship 130 will help develop an efficient on/off loading capacity on every route.” Incat had been a longstanding customer


of diesel machinery from the Ruston stable in the UK, and that legacy manifests itself in the ecoship 130 through the nomination of MAN series 28/33D engines, as were used in the 112m wave piercer class and which have also been fitted in the newly-built 85m type. While based on the original RK280, MAN’s Augsburg technicians have developed the design further into the 28/33D. The plant specified for the 130m


wave piercer comprises four 20-cylinder vee-form models, each rated at 9000kW at 1000 rev/min, to give a power concentration of 36,000kW. Te choice was influenced by considerations of fuel consumption relative to power, to the effect that the installation promises lower fuel usage per cargo tonne per hour than any other high-speed catamaran, together with strongpoints as to durability, low noise and low maintenance costs. Furthermore, the 28/33D will meet future as well as current International Maritime Organization (IMO) edicts governing NOx emissions. Hull design in conjunction with the


The Naval Architect September 2010


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