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All Journal El-Hayah : Jurnal Biologi Research Journal of Life Science JFMR (Journal of Fisheries and Marine Research) Jurnal Biologi Tropis Jurnal Kelautan Nasional Jurnal Lemuru : Jurnal Ilmu Perikanan dan Kelautan Indonesia Best Journal (Biology Education, Sains and Technology) MARLIN : Marine and Fisheries Science Technology Journal Jurnal Pari Bioinformatics and Biomedical Research Journal Nekton Jurnal Airaha Buletin SWIMP Jurnal Salamata Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan
Puspitasari, Asthervina Widyastami
Politeknik Kelautan Dan Perikanan Sorong
Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Immunology & microbiology Library & Information Science Medicine & Pharmacology Public Health Social Sciences Veterinary

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Journal : Nekton

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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.
The Effect of Suspended Solids on Phytoplankton Abundance and Water Quality Dynamics in Intensive Shrimp Ponds in Kraksaan, Probolinggo, Indonesia Lestariaji, Chandika; Anjasmara, Aang Setyawan; Febriantoro, Indra; Poltak, Hendra; Arif, Desilina; Puspitasari, Asthervina Widyastami; Yani, Ahmad; Tantri, Akbar Falah; Saidin, Saidin; Hasan, Fataha Ilyas
Nekton Vol 6 No 1 (2026): Nekton (Issue in Progress)
Publisher : Politeknik Negeri Sambas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47767/nekton.v6i1.1149

Abstract

Intensive cultivation of whiteleg shrimp (Litopenaeus vannamei) has the potential to increase suspended solids concentrations, which can affect water quality and phytoplankton community structure. This study aims to analyze the effect of reducing Total Suspended Solids (TSS) concentrations through the application of a filtration system on phytoplankton abundance and water quality dynamics in intensive ponds. The study was conducted in intensive shrimp ponds in Kraksaan District, Probolinggo Regency, East Java, using an observational-experimental approach comparing pond conditions without filtration, mechanical filtration, and chemical filtration. The parameters observed included TSS, phytoplankton abundance, and several water quality parameters such as temperature, clarity, pH, dissolved oxygen (DO), salinity, nitrate, and orthophosphate. The results showed that mechanical filtration was able to reduce TSS most effectively with a range of 38–47 mg/L compared to chemical filtration (57–63 mg/L) and without filtration (81–91 mg/L). The decrease in TSS was followed by an increase in water clarity and DO concentration. The highest phytoplankton abundance was found in the mechanical filtration treatment (2,870–3,084 ind/L), followed by chemical filtration (2,121–2,291 ind/L), while without filtration showed the lowest abundance (1,062–1,401 ind/L). These results indicate that reducing TSS through the filtration system increases light penetration, thus supporting phytoplankton photosynthetic activity. Overall, the application of filtration systems, especially mechanical filtration, plays an important role in improving water quality and increasing phytoplankton productivity, thus potentially supporting ecosystem stability and the sustainability of intensive vannamei shrimp farming systems.
Co-Authors Abadi, Agung Setia Abimanyu Bayu Saputra Adita Ramadanti Aditya Brahmana Agung Setia Abadi ahmad yani Aminin, Aminin Aminuddin Firdaus Amri, Irman Andina Chairun Nisa Anjasmara, Aang Setyawan Annisa' Bias Cahyanurani Anwari, Zaki Arif, Desilina Asep Akmal Aonullah Asep Akmal Aonullah Asmira Rumalolas Atiqoh Zummah Badaruddin, M. Iksan Bagas Prakoso Boby W Ziliwu Brahmana, Aditya Cahyanurani, Annisa Bias Charles Nalle Charliany Hetharia Damaris Payung Diana Arfiati Diana Putri Renitasari Diana Putri Renitasari Egbert Josua Sirait Endang Yuli Herawati Ernawati Ernawati Ernawati Ernawati Ernawati Fatiha, Siva Eka Febriantoro, Indra Firdaus, Aminuddin Fresty Esmi Samber Hadi Nur Rohman Hafita, Yuniar Ayu Handayan Handayani Handayani Handayani - Hasan, Fataha Ilyas Heri Sutanto Hetharia, Charliany Hismayasari, Intanurfemi B Hismayasari, Intanurfemi B. Hu, Shao-Yang I Komang H Permana Ilham Marasabessy Intanurfemi Bacandra Hismayasari Intanurfemi Hismayasari Irawati Mei Widiastuti Iskandar Iskandar Ismail Ismail Ivonne M. Leiwakabessy Kadarusman Karepesina, Musa Kusriani Kusriani Latifah Latifah Leoni Hayu Sabrina Putri Lestariaji, Chandika Luluk Suryani Manurung, Melani Marcelinus Petrus Saptono Marwa, Marwa Moejiono Moejiono Muh Guntur Ketuut Muh Kasim Muh. Kasim Muhamad Ali Ulat Muhammad Idris Muhammad Ulat Muhfizar, Muhfizar Muhklas Shah Winarno Mukhaimin, Iman Mustamir Kamaruddin Nanik Retno Buwono Nasrul Fauzi Nisa, Andina Chairun Nur Anjelika Saputri Nur Maulida Safitri Nur Syahid, Nur Nurhasanah, Dian Permanasari, Setya W. A. Poltak, Hendra Pujianto, Andreas PURWANTI PURWANTI Ramli, Taufik Hadi Ratna Ratna Renaldo Fredly Rumaherang Renitasari, Diana Putri Rezza Ruzuqi Ristiana Dwi Cahyani Rizkiah, Riza Roger R Tabalessy Ruzuqi, Rezza saidin, saidin Sasole, Umar Shao-Yang Hu Simon Manutilaa Siti Nurkadaria Siti Rahmadani Umngelo Siti Saina Loji Sri Wahyuni Firman Suhermanto, Achmad Sukmawati Sukmawati Syafril Sanusi Tabalessy, Roger R. Tantri, Akbar Falah Umar Sasole Valentine, Riris Yuli Warlela, Welin Angely Wenty Kurniati Wiga Alif Violando Winarno, Muhklas Shah Yani Nurita Purnawanti Yani Nurita Purnawati Yenu, Hosea Zakeus Wuarbanaran