The conversion of ships to perform functions different from the primary functions could be a difficult and time consuming task by conventional practice. This paper presents a ship design approach that is capable of providing enhanced flexibility for conversion. The concept is based on re-structuring the traditional design process by modifying the structural and hydrodynamic analysis to cover the various load cases for the primary design and all the anticipated conversion options. For the structural analysis, the hull structure capable of supporting the extreme load cases are determined and an analytical method based on an iterative- incremental scheme presented and shown as appropriate for the hull progressive collapse analysis. Stability and sea keeping analyses are integrated into the formulation of the design methodology.

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