Perpustakaan Digital ITB

This study aims to design floating net cages with lobster house technology under the environmental conditions of Komodo Island, while also assessing their financial feasibility. The scope of the research includes structural optimization and analysis based on environmental data from Komodo Island and predetermined design targets, as well as financial feasibility analysis using investment cost (CAPEX), operational cost (OPEX), interest rates, inflation, and taxation parameters applicable in Indonesia. The financial assessment employs the Net Present Value (NPV), Benefit-Cost Ratio (B/C), and Internal Rate of Return (IRR) methods. The research methodology involves superstructure modeling using OrcaWave software for radiation–diffraction analysis, as well as OrcaFlex for static and dynamic simulations, followed by extreme value analysis to obtain the results. These results are compared with the design targets for optimization, and subsequently, financial evaluation is conducted based on cost and revenue data provided by the patent holder. The findings show that the optimized floating net cage with lobster house technology meets all design targets. Financial feasibility analysis, conducted by comparing projects with and without lobster house technology, indicates that although CAPEX and OPEX are higher, the lobster house technology increases harvest frequency, thereby generating higher annual revenue compared to floating net cage without lobster house technology. In conclusion, besides increasing financial feasibility, the lobster house also improves technical feasibility by allowing floating net cages to be installed in more extreme environments.