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All Journal International Journal of Marine Engineering Innovation and Research
Wanda Rulita Sari
Universitas Indonesia
Automotive Engineering Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation

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Multi-Objective Optimization for Topological Shipyard Facility Layout using NSGA-II Ghulam Tulus Pambudi; Gunawan; Dimas Angga Fakhri Muzhoffar; Wanda Rulita Sari
International Journal of Marine Engineering Innovation and Research Vol. 9 No. 3 (2024)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i3.4908

Abstract

The increasing complexity in ship construction due to larger vessel sizes has placed significant pressure on the shipbuilding industry to enhance efficiency and reduce costs. This paper focuses on optimizing shipyard facility layouts by minimizing material handling costs (MHC) and area costs (AC) using a topological approach for unequal areas. The objective is to develop a layout that reduces these costs while addressing gaps in previous research, which often assumed uniform department sizes. The proposed method employs the Non-Dominated Sorting Genetic Algorithm-II (NSGA-II), a heuristic algorithm designed for multi-objective optimization. Unlike previous models, this approach allows for variability in department sizes, aligning more closely with real-world conditions. The layout optimization is conducted by considering adjacency and non-adjacency constraints, ensuring an effective arrangement of shipyard departments. The results demonstrate that the proposed method significantly reduces both MHC and AC, leading to a more efficient and cost-effective shipyard layout. The dual-objective approach not only narrows the gap between topological and geometric models but also optimizes space utilization within the shipyard, making it a practical solution for modern shipbuilding challenges.
Optimization of Ship Stability through Response Surface Methodology: Enhancing Safety and Performance via Cross Curve Analysis Kukuh Izatullah; Muhammad Arif Budiyanto; Wanda Rulita Sari
International Journal of Marine Engineering Innovation and Research Vol. 9 No. 2 (2024)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i2.4994

Abstract

Optimizing the cross curves of ship stability through the application of Response Surface Methodology (RSM) requires a complex interplay between factors such as hull shape, beam, and draft significantly influences a ship's stability, which is crucial for the safety of the crew, passengers, and cargo. By employing RSM, this research systematically examines these factors, developing a second-order polynomial model to describe their relationship with stability metrics. The experiments were conducted using Design-Expert 13® software, which facilitated the design of experiments, data collection, model development, and validation. The optimized model revealed that while the overall impact of individual factors might not be significant, their combined interactions provide a robust predictive capability for ship stability. The results demonstrated that the optimized input variables led to improved stability outcomes, minimizing moment trim while maximizing longitudinal and transverse metacentric heights, thereby ensuring better performance and safety across various sea conditions.
Systematic Analysis of Potential Marine Renewable Energy for Coastal Ecological Balance on Bawean Island: A Review Wanda Rulita Sari; Gunawan Budiyanto; Adi Surjosatyo; Dimas Angga Fakhri Muzhoffar
International Journal of Marine Engineering Innovation and Research Vol. 9 No. 2 (2024)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i2.4995

Abstract

Bawean Island displays significant natural potential with abundant natural resources and natural beauty that is attractive for tourism and industrial development. However, this potential is threatened by various environmental and socio-economic problems such as limited availability of clean water, erosion of coastal structures, accumulation of rubbish, economic challenges, and low levels of community education. To overcome these challenges, an integrated and sustainable approach is needed that involves the government, community, and other related parties in sustainable natural resource management and considers ecological, economic, and social aspects. Systematic analysis is carried out to understand the potential of coastal natural resources and the problems that threaten the ecosystem. An integrated and sustainable approach is needed, involving collaboration between government, society, and related parties. The integration of new technologies, including renewable energy technologies, was identified as a potential solution to several specific problems, such as waste management and clean water supply. An integrated and sustainable approach is analyzed by involving collaboration between government, society, and related parties. With collaboration and a deep understanding of the challenges and potential of Bawean Island, it is hoped that a sustainable coastal ecological balance can be achieved for the welfare of the environment and local communities.
Co-Authors Adi Surjosatyo Dimas Angga Fakhri Muzhoffar Ghulam Tulus Pambudi Gunawan Gunawan Budiyanto Kukuh Izatullah Muhammad Arif Budiyanto