In this thesis, the initial design of a double-masted sailboat for ocean navigation was carried out. After introductory considerations about sailboats and different types of sailboats, the paper explains the key concepts important for starting the design of a sailboat. The analysis of the database of similar ships conducted in the course "Small Ships" obtained the initial values of the boat particulars as well as the corresponding coefficients from which the designing of the project began. In the Rhinoceros 5.0 software package, a model of the ship's hull was generated and faired, for which the calculation of hydrostatic characteristics was performed. Then, a suitable rigging configuration was designed and its parts were dimensioned and aerodynamic properties were analyzed. The known hull and rigging geometry was the basis for determining the boat’s resistance and engine. The hull girder bending moments were calculated according to the rules and the structure was conceptually defined. Anchoring equipment was selected and finally, the stability of the ship for two load cases was checked. During the calculation process, the model has been updated and as part of the project, a hull lines plan, a sail plan, a deck layout, an interior layout and a diagram sheet were prepared.