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Egbert Josua Sirait
Politeknik Kelautan dan Perikanan Sorong
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Evaluasi Aspek Gerakan dan Tingkat Kenyamanan Kapal Latih KM. Airaha 02 Yani Nurita Purnawanti; Nurul Huda; Egbert Josua Sirait
Jurnal Airaha Vol 10 No 02: December 2021
Publisher : Politeknik Kelautan dan Perikanan Sorong, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (478.971 KB) | DOI: 10.15578/ja.v10i02.288

Abstract

KM. Airaha 02 is a training vessel owned by the Sorong Marine and Fisheries Polytechnic. This ship is a type of fishing vessel that has a weight of 169 GT, LOA 30.20 m and a width of 6.30 m. KM. Airaha 02 is capable of traveling at a speed of 12.5 knots. KM. Airaha 02 is equipped with long line tuna fishing gear and squid jigging, frozen fish hold, and freezing room. Safety and comfort of crew and passengers on KM. Airaha 02 really needs to be considered for the smooth operation of fishing operations. Therefore, it is necessary to analyze the evaluation of the ship's motion when traveling on random waves in order to calculate the comfort level of passengers based on ISO 2631 criteria. The analysis was carried out by reverse engineering. The 3D model is based on general arrangement data from KM. Airaha 02, the main measure, and direct survey results. The ship's motion due to wave excitation is obtained from the results of the RAO analysis, then the comfort level is carried out by the Motion Sickness Incident (MSI) analysis. The biggest movement experienced by KM Airaha 02 is surge of 2.8 m/m and roll of 6.1 deg/m. Passengers began to feel discomfort after 2 hours of travel when the waves came from the head seas direction. If the direction of the wave is coming from the side, passengers start to feel discomfort after 8 hours of travel.
Feasibility Study of a Solar Powered Semi-Submarine (KMP. Mnaibori) as a Model of Sustainable Marine Ecotourism in Raja Ampat Yani Nurita Purnawati; Andreas Pujianto; Asthervina Widyastami Puspitasari; Wenty Kurniati; Sri Wahyuni Firman; Egbert Josua Sirait
Nekton Vol 5 No 2 (2025): Nekton
Publisher : Politeknik Negeri Sambas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47767/nekton.v5i2.1089

Abstract

This study describes the KMP. Mnaibori, a 14-meter semi-submarine catamaran designed for the waters of Raja Ampat as a model of sustainable marine ecotourism. The objectives are to present the vessel’s design specifications, integrate a hybrid solar–energy system, and assess the financial feasibility and strategic aspects of its development. The methodology includes technical design analysis based on stability, comfort, and underwater observation experience; solar power system performance estimation using the peak sun hours and energy loss factor approach; and financial analysis using Payback Period (PP), Net Present Value (NPV), Profitability Index (PI), Internal Rate of Return (IRR), Break-Even Point (BEP), and Return on Investment (ROI) with a 12% discount rate over a 5-year horizon. The results show that with a solar panel area of 49 m² (38 modules @200 W), the system can generate 21.66 kWh per day. Economically, the project is feasible with a positive NPV of IDR 4.44 billion, a BEP at 12.11 passengers/day (33.6% occupancy), ROI of 49.85% per year, and IRR between 42–45%. SWOT analysis highlights the vessel’s strengths in innovative design and energy efficiency, opportunities in ecotourism growth and green financing support, and challenges related to fuel dependency and weather variability. Development strategies are directed toward service differentiation, solar energy optimization, and enhancing local maintenance capacity.
Co-Authors Boby Wisely Ziliwu Nurul Huda Pujianto, Andreas Puspitasari, Asthervina Widyastami Sri Wahyuni Firman Wenty Kurniati Yani Nurita Purnawanti Yani Nurita Purnawati