| Popis: |
The increased distance of tuna fishing grounds necessitates the fishing industry to seek the best use of existing fishing vessels. This project begins with a 36 m sardine vessel and converts it into a tuna-fishing vessel with an insulated storage space. Once the new main dimensions have been calculated, an intact stability analysis is conducted according to the International Maritime Organization’s criteria for this type of vessel. Subsequently, a simulation to evaluate the hazard criteria of a parametric roll is performed. Hereby, the matching period of roll and period of encounter, the areas of instability p and q, and Dunwoody’s critical height are evaluated. Then, a comprehensive calculation is made by applying the methodology proposed by Themelis and Spryrou (Probabilistic Assessment of Ship Stability. Transactions—SNAME, 2007, [15]) as well as by adding a water shipping component to the general roll equation. Finally, to analyze the possible risk of loss (capsizing) based on a confidence interval of at least 86.5%, corresponding to a significant [Hs], an analysis of the critical wave height at each node, as proposed by Dunwoody (Roll of a ship in Astern Seas—Metacentric height spectra, 1989, [4]), is carried out. |
