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Ways to Conserve Energy on Board - DNV

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FutureShip has also begun offering an extended range of<br />

engineering c<strong>on</strong>sultancy services, such as c<strong>on</strong>ceptual designs<br />

for fuel-efficient, next-generati<strong>on</strong> vessels. One example is a<br />

9,000 TEU c<strong>on</strong>tainership sized for the widened Panama Canal,<br />

which required short ship lengths and a beamy design.<br />

FutureShip’s work <strong>on</strong> this project included studies in<str<strong>on</strong>g>to</str<strong>on</strong>g> stability<br />

as well as energy efficiency.<br />

New Hull Shapes<br />

The company also offers c<strong>on</strong>sultancy <strong>on</strong> issues that are primarily<br />

relevant for passenger ships, such as noise, vibrati<strong>on</strong><br />

and the avoidance of moti<strong>on</strong> sickness. Hull shape optimisati<strong>on</strong>,<br />

however, remains the area where FutureShip believes<br />

it has truly s<str<strong>on</strong>g>to</str<strong>on</strong>g>len a march <strong>on</strong> yards as well as other class<br />

societies.<br />

”Many yards may claim <str<strong>on</strong>g>to</str<strong>on</strong>g> have optimised their initial<br />

designs by changing various parameters such as the length<br />

and profile of the bow, and testing the various results,” says<br />

Hochkirch. “However, what we do is strive for the optimum<br />

design right from the start.” To do this, FutureShip starts<br />

from the essential principles of fluid dynamics, then applies<br />

a systematic and rigorous approach <str<strong>on</strong>g>to</str<strong>on</strong>g> CFD testing.<br />

”Optimised hull designs require in-depth c<strong>on</strong>siderati<strong>on</strong> of<br />

the ship’s operati<strong>on</strong>al profile,” he adds, ”especially its likely<br />

range of speeds.” Many yards tailor hulls <str<strong>on</strong>g>to</str<strong>on</strong>g> the design speed<br />

fully laden as specified in the shipbuilding c<strong>on</strong>tract, rather<br />

than the speeds the vessel is likely <str<strong>on</strong>g>to</str<strong>on</strong>g> actually employ, especially<br />

in these days of slow steaming.<br />

“By being very specific about speeds, owners can realise<br />

the greatest saving,” Hochkirch explains. “We can<br />

CFD.<br />

Computati<strong>on</strong>al<br />

fluid dynamics<br />

is a field of<br />

fluid mechanics<br />

that uses<br />

numerical<br />

methods and<br />

algorithms <str<strong>on</strong>g>to</str<strong>on</strong>g><br />

analyse and<br />

solve problems<br />

involving fluid<br />

flows.<br />

DESIGN. FutureShip<br />

specialises in hull shape optimisati<strong>on</strong>.<br />

01/2013<br />

43

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