Development of a systematic series of gulet hull forms with cruiser stern

A gulet series with cruiser stern was produced from the original main of 21 gulets with cruiser stern as a result of iterative study. Some important relations and graphs are presented for use in the geometric design stage by determining significant design requirements and a geometric design process. Geometric design block coefficient (CB0) was chosen as main parameter in determining the gulet hull forms. The method of form derivation was then developed related to CB0. In this method, the change of the ratio of any station breadth at any waterline to breadth overall (Bi,k/BOA) according to CB0 was exactly represented with a quadratic polynomial function. In addition, a computer program named CGCS was developed. With this program, a gulet hull form with cruiser stern can be derived for the desired number of cabins or the desired number of guests, LOA, CB0 and the keel breadth. At the end of the study, by using CGCS and AutoCAD programs, a gulet hull form was derived and some geometric and hydrostatic values, the offset values and form plans were presented.

► An original gulet series was developed systematically without destroying the conventionalism. ► The gulet hull forms were exactly represented with the second-degree polynomials. ► A geometric design process for these gulet hull forms was defined. ► The body plans of any gulet can be exactly obtained depending on the design requirements. ► Traditional gulet hull forms may be move into the future by this gulet series.