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All Journal Buletin PSP Jurnal Teknologi Perikanan dan Kelautan Marine Fisheries: Jurnal Teknologi dan Manajemen Perikanan Laut Jurnal Pengolahan Hasil Perikanan Indonesia Jurnal Ilmu dan Teknologi Kelautan Tropis ILMU KELAUTAN: Indonesian Journal of Marine Sciences Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology KAPAL Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Torani Journal of Fisheries and Marine Science ECSOFiM (Economic and Social of Fisheries and Marine Journal) Jurnal Perikanan dan Kelautan Journal IPTEKS Pemanfaatan Sumberdaya Perikanan Jurnal Akuatika Indonesia JURNAL IPTEKS PEMANFAATAN SUMBERDAYA PERIKANAN Albacore : Jurnal Penelitian Perikanan Laut Jurnal Perikanan Universitas Gadjah Mada Jurnal Otomasi Kontrol dan Instrumentasi Jurnal Penelitian Perikanan Indonesia Bawal : Widya Riset Perikanan Tangkap Samakia: Jurnal Ilmu Perikanan Jurnal Kelautan Nasional JURNAL TEKNIK International Journal of Marine Engineering Innovation and Research Barakuda 45 Farmers: Journal of Community Services Policy Brief Pertanian, Kelautan, dan Biosains Tropika Jurnal Sains & Teknologi Fakultas Teknik Universitas Darma Persada Bambu Laut: Jurnal Pengabdian Masyarakat Jurnal Pengabdian Masyarakat Inovatif Jurnal Pengabdian Masyarakat Inovatif
Yopi Novita
Departemen Pemanfaatan Sumberdaya Perikanan, Fakultas Perikanan Dan Ilmu Kelautan, Institut Pertanian Bogor, Jalan Agatis, Kampus IPB Dramaga, Bogor 16680, Indonesia
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High Local Variability in Hard Coral Juveniles Reveals Uneven Recovery Potential Across Proximate Islands in Karimunjawa, Indonesia Muhammad Fadhilah Ramadhan; Dwi Haryanti; Yoko Nozawa; Diah Permata Wijayanti; Agus Sabdono; Yopi Novita
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 31, No 2 (2026): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.31.2.124-132

Abstract

Coral reefs are vital marine ecosystems in the Karimunjawa Archipelago, Indonesia, but they face increasing threats from climate change and local anthropogenic stressors. Coral juveniles are widely recognized as reliable indicators of recent recruitment and reef recovery potential. In 2023, hard coral (scleractinian) juveniles (<10 cm in diameter) and benthic assemblages were surveyed at nine islands in this archipelago. At each island, 50 photo quadrats (50 × 50 cm), placed at 1 m intervals along a 50 m transect at a depth of ~ 7 m, were analyzed. The statistical approach zero-inflated Generalized Linear Mixed Model (GLMM) with AIC model selection was used to determine the factors influencing the abundance of hard coral juveniles. The highest coral juvenile density is on Sambangan Island (145 juveniles; 11.6 colonies.m-2), and the lowest is on Tengah Island (19 juveniles; 1.5 colonies.m-2). Most juveniles belonged to Montipora (49%), Fungia (20%), and Porites (6%). Hard corals dominated the benthic cover, with median island-level values ranging from 25% to 79%. Juvenile densities varied greatly among islands, with a significant positive correlation between juvenile density and hard coral cover detected at only two islands. Overall, juvenile density declined with proximity to the main Karimunjawa Island, the center of human activity. Our findings revealed unexpectedly high spatial variation in coral juvenile abundance among proximate islands, indicating differences in recovery potential and anthropogenic pressure. Our results highlight the need for island-specific coral reef conservation strategies, even across short spatial scales.
Performa Kekuatan Lambung Kapal FRP di Galangan Kapal Rakyat UD Wahyu Asih Fiberglass, Kebumen Faisal Atthoriq; Yopi Novita; Tri Nanda Citra Bangun
Torani Journal of Fisheries and Marine Science Vol. 9 No. 2 (2026): VOLUME 9, NOMOR 2, JUNE 2026
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35911/torani.v9i2.48419

Abstract

The UD Wahyu Asih Fiberglass community shipyard has produced various types of FRP ships; however, the manufacturing process does not adhere to the construction standards set by the Indonesian Classification Bureau (BKI) and still relies on the independent experience of the business owner. Additionally, this shipyard lacks scientific evidence regarding the strength of the FRP ship hull structures it produces. This study aims to describe the stages of ship construction and the materials used, as well as determine the value of material strength through tensile tests, compressive tests, and the elastic modulus of the FRP ship hull structure. Data collection was conducted through literature studies, field observations, specimen creation, and mechanical property testing of materials, and then analyzed using a descriptive-comparative approach. The results of the study showed that the materials used in the manufacture of FRP ships include Yukalac 235 resin, Yukalac G-123 T-EX gelcoat, CSM300, WR600, WR800 fibers, and additives such as Mepoxe catalyst, cobalt napthanate, pyrogenic silica, talc, Matapel Unipol dye, miracle gloss, kerosene, ivory rubbing compound, and kit (compound). The ship construction process was carried out in two main stages: lamination and finishing, utilizing hand lay-up techniques. Although the tensile strength value has met the minimum BKI standard, the compressive strength and elastic modulus values ​​obtained are still below the limits set by BKI. Based on the results of this study, ships built at the UD Wahyu Asih Fiberglass shipyard can be recommended to the Ministry of Maritime Affairs and Fisheries for the procurement of aid ships, provided that their tensile strength and elastic modulus are improved.
EFFECT OF TAR AND CHITOSAN COATING ON PHYSICAL AND MECHANICAL PROPERTIES AND TECHNICAL LIFETIME OF PINEAPPLE LEAF FIBER ROPE IN A FRESHWATER ENVIRONMENT Mokhamad Dahri Iskandar; Didin Komarudin; Vita Rumanti Kurniawati; Yopi Novita; Muhamad Zildan Sukmana; Iftitah Aura Azzahra; Kemal Fasya
Jurnal Penelitian Perikanan Laut (Albacore) Vol 10 No 1 (2026): Albacore
Publisher : Department of Fisheries Resources Utilization, Faculty of Fisheries and Marine Science, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/core.10.1.187-198

Abstract

Widespread use of synthetic materials in fishing gear has raised serious environmental concerns due to their non-biodegradable nature. Pineapple leaf fiber is a promising biodegradable material that can be used as a base for ropes in environmentally friendly fishing gear. This study aimed to analyze the physical and mechanical properties of PALF rope, particularly breaking strength and elongation, with surface treatments using tar and chitosan. The methods included specimen preparation, coating, freshwater immersion, and mechanical testing following SNI ISO 1805:2010. The results showed that chitosan coating improved breaking strength by 18.78% and elongation by 25.56% compared to the control. Coating treatments also affected the stress values, with the most significant reduction observed in tar-coated samples (57.89%). Immersion tests over five weeks indicated a decline in tensile strength and elasticity, with the control group showing the highest coefficient of determination (R² = 0.9145). Although chitosan-coated ropes degraded more quickly in terms of tensile strength, they maintained elongation capacity up to week 12. These findings suggest that chitosan-coated PALF ropes have strong potential as a biodegradable material for sustainable fishing gear. Key words: breaking strength, elongation, environmentally friendly fishing gear, pineapple leaf fiber
Compliance Analysis of Fiberglass Boat Construction by CV. Roni Marine with BKI Standards Yopi Novita; Asyifa Hidayanti; Vita Rumanti Kurniawati
International Journal of Marine Engineering Innovation and Research Vol. 11 No. 2 (2026)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v11i2.9800

Abstract

Technological developments have encouraged the shift in the main material from wood to Fiber Reinforced Plastic (FRP) because of its light weight, noncorrosive, lower price, and simple production process. However, traditional FRP boat production in Indonesia generally has not implemented the construction standards set by the Indonesian Classification Bureau (BKI), including those of CV. Roni Marine boat production. This study aims to describe the construction of FRP boats produced by CV. Roni Marine and assess its compliance with BKI standards. The research was conducted through direct observation at CV. Roni Marine, measuring the dimensions of the 9.5 m FRP boat construction, and literature studies of the BKI standard documents. The main components of boat construction analyzed include the boat's skin, keel, frames, longitudinal stiffeners, and deck beams. The results showed that the CV. Roni Marine uses a combination of transverse and longitudinal construction systems with laminated materials, including CSM300 and WR600 fibers. The thickness of the hull laminate is 2.13 mm. The spacing between frames is 580 mm, length of the longitudinal stiffeners is 8,700 mm, the width of the keel lamination is 60 mm, and the spacing between the deck beams is 2,900 mm. The results show that 100% of the boat construction does not comply with BKI standards
Input and Output of Tuna Fishing Operations Using Longline Vessels Based at Cilacap Ocean Fishing Port Kyssha Alya Larasati; Vita Rumanti Kurniawati; Yopi Novita
International Journal of Marine Engineering Innovation and Research Vol. 11 No. 1 (2026)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v11i1.8796

Abstract

Tuna fishing not only generates significant economic profit, but also has negative environmental impacts due to the intensive use of materials, equipment, and energy. This study aims to identify and measure the input and output components of the tuna fishing process using longline vessels at the Cilacap Oceanic Fisheries Port through a life cycle inventory (LCI) approach. Data collection was carried out through field observations and structured interviews with 30 selected stakeholders, including the analysis of vessel specifications, fishing gear, and supplies. The results of the study show that supplies dominate operational inputs with a total mass of 62,026 kg/year. This indicates a high resource intensity, requiring 29.31 kg of material  input to produce 1 kg of tuna. In addition, this activity produces outputs in the form of significant environmental impacts, including Sulfur Oxide (SOx) emissions of 707.62 kg/year due to diesel fuel combustion and solid waste of 33,550 kg/year, predominantly consisting of single-use plastic packaging from leftover supplies. These findings indicate the need for improvements in logistics components from the upstream side and waste management strategies in the fisheries sector.
PEMANFAATAN LAMPU LED UNTUK PENINGKATAN HASIL TANGKAPAN PADA KAPAL HAND LINE DI KENDARI Agus Wahyu Santoso; Mulyono S Baskoro; Budhi H Iskandar; Yopi Novita
Jurnal Teknik Vol. 9 No. 1 (2020): Januari-Juni 2020
Publisher : Universitas Muhammadiyah Tangerang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31000/jt.v9i1.2486

Abstract

Kapal penangkap ikan hand line di Kendari Indonesia sebagian besar dioperasikan tanpa dilengkapi alat bantu penangkapan ikan. Oleh karena itu untuk meningkatkan produktifitasnya maka diperlukan alat bantu penangkapan ikan seperti lampu LED. Tujuan penelitian ini adalah membandingkan efektifitas hasil tangkapan kapal ikan (hand line) yang dilengkapi dengan lampu LED dengan hasil tangkapan tanpa menggunakan lampu LED. Lokasi penelitian dilakukan sekitar perairan bagian timur Kota Kendari, Indonesia. Metode penelitian yang dilakukan adalah dengan metode experimental fishing, dimana peneliti langsung melakukan eksperimen penangkapan ikan di lapangan untuk mengambil data. Hasil penelitian menunjukkan bahwa Lampu LED pada kapal penangkap ikan memberikan hasil tangkapan yang lebih banyak sekitar 22.30 % dibandingkan dengan kapal penangkap ikan yang tanpa menggunakan lampu LED. Jenis jenis ikan yang ditangkap adalah: Decapterus sp, Rastrelliger sp, Sardinella sp, Selaroides sp, Coryphaenidae sp, Euthynnus Affinis,Lutjanus Sp, dan Epinephelus Sp. Dengan demikian kapal ikan (hand line) yang diberikan kepada nelayan sebagai kapal bantuan dapat bermanfaat secara maksimal.Kata kunci: penangkapan ikan, lampu LED, produktifitas, jenis ikan
Co-Authors . Uju Achmad Fauzan Achmad Rizal Agus Sabdono Agus Wahyu Santoso Akhmad Solihin Annisa Luklu Nadira Annisa Ramadhanti Aprilia Putri Kusumah Ariestio Dwi Ramadhan Asyifa Hidayanti Bambang Murdiyanto Bambang Murdiyanto Budhi H Iskandar Budhi H Iskandar Budhi H. Iskandar Budhi H. Iskandar Budhi H. Iskandar Budhi Hascaryo Iskandar Budhi Hascryo Iskandar Budi Harscahyo Iskandar Budi Hascaryo Iskandar Budiarti, Yesnina Budy Wiryawan Darmawan, Darmawan Deni A Soeboer Deni A. Soeboer Deni Purnomo Diah Permata Wijayanti Dianti, Sari Rama Didik Santoso Didin Komarudin Diniah Diniah Domu Simbolon Dwi Haryanti Dwi Putra Yuwandana Eko Sri Wiyono Eva Eva Ariyani, Eva Faisal Atthoriq Fikri Rizky Malik Firda Aulya Syamani Fis Purwangka Fitri Irawan Fiz Purwangka Fuad Gondo Puspito Hamka, Moh. Saiful Rahman Hapsari, Riyanti Dyah Hardiansyah, Ridwan Hariyanto Hariyanto Hery S. Nurdin Hery Sutrawan Nurdin Hery Sutrawan Nurdin Iftitah Aura Azzahra Ima Kusumanti Iman Anugerah Bintoro Indra Jaya Indra Jaya Indra Jaya Iqbal, Muhammad Nur Izza M. Apriliani Izza Mahdiana Apriliani Izza Mahdiana Apriliani Juhari Juhari Julia Eka Astarini Kemal Fasya Kumala Sari Ode Murhum Kuncoro, Hendhi Sugrito Kyssha Alya Larasati Laila Lafi M. Dahri Iskandar Mahesa G. A. Satria Malik, Fikri Rizky Moch Ricky Dariansyah Moh. Saiful Rahman Hamka Mohammad Fachrurezky Pahlevi Mohammad Imron Mokhamad Dahri Iskandar Muh. Arkam Azi Muh. Arkam Azis Muhamad Khoirul Anam Muhamad Zildan Sukmana Muhammad Dendy Alamul Huda Muhammad Fadhilah Ramadhan Muhammad Najib Islam Mulyono S. Baskoro Mustaruddin Nabila Rahmawati Neni Martiyani Neni Martiyani, Neni Neni Neni Martiyani, Neni Nora Akbarsyah Nurtsani Liliana Paduartama Tandipuang Prihatin Ika Wahyuningrum Pringgo KDNY Putra Pringgo Kusuma Dwi Noor Yadi Putra Purnomo, Deni Rahmawati, Nabila Reni Eva Ariyani Reni Eva Ariyani, Reni Eva Retno Muninggar Riana Citra Dewi Siti Istiqomah Sri Suryo Sukoraharjo Sudirman Sukardi Sugeng H. Wisudo Sukoraharjo, Sri Suryo Syafril Mayu Dinata Tiaraningtyas, Dyah Ayu Tri Nanda Citra Bangun Tri Nanda Citra Bangun Tri Wiji Nurani Uju Uju Vita Rumanti Kuniawati Vita Rumanti Kurniawati Wahab, Aulia Azhar Wazir Mawardi Wazir Mawardi Yoga Nugraha Yoga Yuniadi Yoko Nozawa Yusuf Fathanah Zarrochman