Catamaran workboat for fish farms

Cilj ovog diplomskog zadatka je od postojećeg radnog katamarana, koji je u potpunosti izrađen od aluminija, izraditi projekt katamarana s čeličnim trupom te aluminijskim nadgrađem. Napravljeni su proračuni strukturnih dimenzija aluminijskog i čeličnog trupa, te proračun masa i centracija masa tih trupova. Uzimajući u obzir činjenicu da katamaran s čeličnim trupom ima veću masu, učinjena je i transformacija forme trupa radi potrebnog povećanja istisnine. S obzirom da se radi o iterativnom procesu, na transformiranoj formi ponovljen je proračun strukturnih dimenzija i centracija masa, te su napravljeni preliminarni proračuni stabiliteta i otpora.The aim of this diploma thesis is to make the catamaran with a steel hull and aluminium superstructure based on project of the existing working catamaran, which is made entirely of aluminium. Calculations were performed for the structural dimensions of the aluminium and steel hull, so as the estimation of the masses and mass centration of these hulls. Considering that a catamaran with a steel hull has a greater mass, transformation of the hull was done for the necessary increase in displacement. Since it is iterative process, for this transformed form the calculations of the structural elements, mass centration, preliminary stability and resistance were redone