On efficient design of swath ships by using reliability-based optimisation

In this paper the reliability-based optimisation technique was applied to a typical transverse frame in a built SWATH ship. The response amplitude operators of primary loads were evaluated by a three dimensional oscillating source distribution method in association with linearised potential theory. The extreme values were then calculated by spectral analysis. The structural weight was used as the objective function. It was found that a more efficient design of SWATH ships could be achieved by using reliability-based optimisation techniques.