Abstract
A numerical model of the large carrying capacity crane ship with the fully revolving topside is represented in the article. The model provides a way of determining the main crane ship's elements using version design approach with further system optimization. The principal analytical equations are set up in the article to solve that problem. Relationship between ship characteristics and elements is established from the point of view of providing initial stability. Once the model has been verified, an investigation of the influence of relative breadth and block coefficient on the displacement of the large carrying capacity crane ship in operating condition is performed. Based on the results of that investigation, the conclusions as to insufficiency of the condition of providing initial stability for system optimization of crane ships are made.
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