In this thesis, the process of design a speedboat type with rubber tubes intended for the transport of tourists was carried out. Fiberglass composite was chosen as the construction material for the hull and deck, i.e. a composite made of glass fibers that make up the matrix of the composite, while polyester resin reinforced it. Reinforced rubber canvas was chosen as the tube material, intended exclusively for the production of boat tubes. The process of building a boat is generally very complex and complicated, so for this purpose a 3D model of the boat with all the essential parts of equipment and structure was created, to facilitate the creation of the project itself. The first step in the creation of this work was the creation of the form, i.e. first the lines of the ribs, and then gradually the entire 3D model with all the structural elements, while simultaneously taking care of the placement of individual parts of equipment and the layout of the space on the boat. After the construction of the hull, there was the preparation of the general plan of the boat (deck space, placement of tanks...), and then the calculation of the structure, which was carried out according to the rules of the Croatian Register of Shipping (CRS). The next step was to estimate the mass and calculate the centration in order to be able to determine the position of the center of gravity of the boat system and the total load of the boat. Then follows the calculation of stability carried out according to the rules of the CRS, and finally the creation of a laminate plan of the boat's structural elements for the manual procedure of laying the laminate and the creation of technical documentation.