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<p>Modern Naval Architects use a variety of computer design tools to explore feasi-
ble options for clean sheet ship designs. Under the Naval Sea Systems Command
(NAVSEA), the Naval Surface Warfare Center, Carderock Division (NSWCCD) has
created computer tools for ship design and analysis purposes. This paper presents
an overview of some of these tools, speci cally the Advanced Ship and Submarine
Evaluation Tool (ASSET) version 6.3 and the Integrated Hull Design Environment
(IHDE). This paper provides a detailed explanation of a ship design using these ad-
vanced tools and presents methods for optimizing the performance of the hullform,
the selection of engines for fuel e ciency, and the loading of engines for fuel e ciency.
The detailed ship design explores the design space given a set of speci c requirements
for a cruiser-type naval vessel.
The hullform optimization technique reduces a ships residual resistance by using
both ASSET and IHDE in a Design of Experiments (DoE) approach to reaching an
optimum solution. The paper will provide a detailed example resulting in a 12%
reduction in total ship drag by implementing this technique on a previously designed
hullform. The reduction of drag results in a proportional reduction in the amount of
fuel used to push the ship through the water.
The engine selection optimization technique uses MATLAB to calculate the ideal
engines to use for fuel minimization. For a given speed-time or power-time pro le, the
code will evaluate hundreds of combinations of engines and provide the optimum en-
gine combination and engine loading for minimizing the total fuel consumption. This
optimization has the potential to reduce fuel consumption of current naval warships
by upwards of 30%.
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<br>Subjects:</div>
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Jones, Adam</div>
Internet Archive identifier