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The Impact of B/D Ratio on the Technical Performance of Outrigger Fishing Vessels at PPN Palabuhanratu Hamka, Moh. Saiful Rahman; Novita, Yopi; Kurniawati, Vita Rumanti
International Journal of Marine Engineering Innovation and Research Vol 9, No 1 (2024)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i1.20214

Abstract

Small and slender boats are usually installed with outrigger as additional construction to enhance its stabilities. The same practices are found in Palabuhanratu fishing port. The massive use of outrigger in most fishing ports, including Palabuhanratu, have led to berthing problems due to limited area of the port basin, hence boat or outrigger modification is required to overcome the problem. Adjusting the hull slenderness by defining the proper breadth and depth (B/D) ratio can be potential approach to eliminate the outrigger. Therefore, this research is designed to define ideal B/D ratio for boat without outrigger based on its stability, resistance and seakeeping in accordance with operational purpose. The study was conducted by simulating three different B values with constant D, each of which experiencing two different operational conditions, half and full loads. The quality of boat stability was evaluated in five parameters defined by IMO, whilst the resistance performance was evaluated using comparison analysis, and the seakeeping performance was evaluated using wave height and wave arrival angle. The result showed that according to its operational purposes, the boat with B/D ratio of 1,71 has the best performance to be operated without outrigger
KEKUATAN BENTURAN KAPAL KAYU 5-7 GT SAAT MERAPAT KE DERMAGA: UPAYA UNTUK MENENTUKAN KETEBALAN MINIMAL LAMINASI FRP Anam, Muhamad Khoirul; Novita, Yopi; Iskandar, Budhi H.
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 12 No. 3 (2020): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jitkt.v12i3.30063

Abstract

Kajian ini merupakan tahap awal dari kajian yang bertujuan menentukan ketebalan minimal lapisan laminasi FRP (Fiber Reinforced Plastic) pada kapal kayu ukuran 5-7 GT (Gross Tonnage). Konstruksi laminasi FRP bertujuan mengurangi kontak langsung bagian kapal dengan air disekitarnya serta mampu menahan benturan kapal ketika sandar pada dermaga khususnya bagian kasko kapal. Saat ini laminasi FRP dilakukan berdasarkan keahlian dan pengalaman yang dimiliki oleh pengrajin. Tujuan dari kajian ini untuk mengetahui kekuatan benturan pada kapal yang akan dijadikan acuan untuk menentukan ketebalan laminasi FRP. Metode yang digunakan adalah dengan identifikasi dimensi utama kapal, kecepatan kapal dan kekuatan benturan yang kemudian dianalisis secara deskriptif numerik. Data diperoleh dari 13 kapal sampel selama bulan Oktober-Desember 2019. Hasil dari penelitian ini menunjukkan bahwa kapal yang digunakan termasuk towed or dragged gear. Dimensi utama kapal dengan rata-rata Loa 9,5 m; Bmax 3,2 m; D 1,2 m dengan ton displacement 13,6 ton/m3. Kecepatan kapal ketika terjadi benturan pertama mengalami penurunan berkisar 0,4-1,0 m/s atau sekitar 20-75%. Kekuatan benturan yang terjadi pada kapal ketika benturan pertama berkisar 7,13-87,48 kN.m. Oleh karena itu, kekuatan bentur yang akan dijadikan acuan dalam menentukan ketebalan lapisan laminasi FRP pada kapal kayu adalah sebesar 87,48 kN.m.
Mechanical Strength Properties of Resin-Coated Cardboard as a Viable Alternative to Glass Fiber in the Construction of Fiberglass Vessels Yuwandana, Dwi Putra; Budiarti, Yesnina; Novita, Yopi; Komarudin, Didin
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 22, No 3 (2025): October
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v22i3.70143

Abstract

Fiberglass vessels produce considerable environmental waste due to the non-biodegradable nature of glass fiber materials, necessitating the exploration of biodegradable alternatives. Given the abundance of cardboard waste in Indonesia, this study investigates its potential as a substitute for glass fiber in fiberglass boat construction. In the process of producing cardboard sheets, during the pulping stage using a blender, the 716 grams of cardboard are mixed with 10 to 15 liters of water. The research aims to evaluate resin-coated cardboard's physical properties and mechanical strength, comparing them to the mechanical strength standards set by the Indonesian Classification Bureau (BKI). Utilizing an experimental methodology with descriptive and comparative analysis, the results indicate that resin-coated cardboard possesses robust, lightweight, and water-resistant characteristics. The four-layer treatment achieved the highest tensile strength and bending strength values of 37.61 MPa and 62.23 MPa, respectively. In comparison, the three-layer treatment yielded a maximum modulus of elasticity of 145.80 MPa. Although the mechanical properties did not meet the minimum standards established by BKI, the resin-coated cardboard demonstrates potential as an alternative material for plywood coatings in the superstructures of vessels.
The Impact of Span Width and Outrigger Shape on Fishing Boats at Palabuhanratu Fishing Port, Indonesia Fikri Rizky Malik; Yopi Novita; Budhi Hascaryo Iskandar; Gondo Puspito; Sri Suryo Sukoraharjo
International Journal of Marine Engineering Innovation and Research Vol. 9 No. 4 (2024)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i4.4835

Abstract

Outrigger boats are prevalent in Indonesian waters. In Indonesia, the majority of Outrigger boats have a gross tonnage of less than 7 GT, resulting in their classification as "boats." After being hit by waves, the outrigger serves as a balancing mechanism on the boat, ensuring that it does not capsize and that it continues to keep its stability. In spite of the fact that they have a number of benefits, outrigger boats also have a number of drawbacks. One of these drawbacks is that they need a mooring space that is sufficiently large to anchor the boat at the beach or pier. This research was carried out through the use of experimental methodologies. The stability value is a reference to the design parameters established by IMO A.749 (18), which are applicable to all boats. Type 2 boats have a maximum GZ value that is greater than that of type 1 boats. According to the findings of the study, the utilization of the Palabuhanratu pool was increased by 33% on model B boats and by 52% on boat C when the outrigger boom was pulled while the boat was in the port pool. This was in comparison to the original value when the boat was anchored without pulling the outrigger boom.
Modulus of Rupture and Modulus of Elasticity in Recycling FRP Tri Nanda Citra Bangun; Nabila Rahmawati; Yopi Novita; Didin Komarudin; Mokhamad Dahri Iskandar; Deni Purnomo; Budhi Hascaryo Iskandar
International Journal of Marine Engineering Innovation and Research Vol. 9 No. 4 (2024)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i4.4838

Abstract

Fiber Reinforced Plastic (FRP) material has been widely used as a ship construction alternative to wood. FRP has many advantages such as lightweight material, easy maintenance, weather resistance, economical price, and shorter production time. FRP ship production is weak from the waste factor produced, such as production residue during shipbuilding, ship molds, and FRP shipwrecks. FRP waste can impact the environment, economy, and human health. These impacts include soil pollution, microplastics, skin diseases, and human respiratory disorders. FRP material tends to be burned by many shipyards but still leaves waste in the form of dust. FRP material is difficult to decompose and takes a long time to melt. One strategic effort to minimize the impact of FRP is to recycle FRP. This study aims to reduce FRP waste by making composite boards from FRP waste. The method used was experimental, involving the making of 12 specimens and testing the density, MOR, and MOE. Based on the results of the density value test, the average value obtained follows the JIS A 5905-2003 reference. The MOR and MOE values for each specimen do not comply with the Indonesian Classification Bureau (BKI) standards. In the ANOVA test calculation, no significant differences were obtained for MOR and MOE.
Study of FRP Ship Waste Composite Materials and Its Combustion Residue Nabila Rahmawati; Yopi Novita; Didin Komarudin; Mokhamad Dahri Iskandar
International Journal of Marine Engineering Innovation and Research Vol. 9 No. 1 (2024)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i1.5055

Abstract

The escalating utilization of FRP materials ultimately gives rise to issues related to waste production. Waste disposal typically involves incineration, as practiced at UD Wahyu Asih Fiberglass. The combustion process yields thick black smoke and a pungent odor. Incineration does not annihilate fiberglass material but generates combustion byproducts, such as solid ash. This study aims to elucidate the material type, chemical element content, and associated properties inherent in FRP shipbuilding materials at UD Wahyu Asih Fiberglass Shipyard. The methodology commences with the identification of materials utilized in FRP ship manufacture through field observations at the shipyard. Another objective of this study is to quantify the ash content and ascertain the total particulate matter during the incineration process of FRP shipbuilding material waste via laboratory tests. The total particulate data obtained will be compared with applicable emission quality standards.
The Impact of B/D Ratio on the Technical Performance of Outrigger Fishing Vessels at PPN Palabuhanratu Moh. Saiful Rahman Hamka; Yopi Novita; Vita Rumanti Kurniawati
International Journal of Marine Engineering Innovation and Research Vol. 9 No. 1 (2024)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i1.5069

Abstract

Small and slender boats are usually installed with outrigger as additional construction to enhance its stabilities. The same practices are found in Palabuhanratu fishing port. The massive use of outrigger in most fishing ports, including Palabuhanratu, have led to berthing problems due to limited area of the port basin, hence boat or outrigger modification is required to overcome the problem. Adjusting the hull slenderness by defining the proper breadth and depth (B/D) ratio can be potential approach to eliminate the outrigger. Therefore, this research is designed to define ideal B/D ratio for boat without outrigger based on its stability, resistance and seakeeping in accordance with operational purpose. The study was conducted by simulating three different B values with constant D, each of which experiencing two different operational conditions, half and full loads. The quality of boat stability was evaluated in five parameters defined by IMO, whilst the resistance performance was evaluated using comparison analysis, and the seakeeping performance was evaluated using wave height and wave arrival angle. The result showed that according to its operational purposes, the boat with B/D ratio of 1,71 has the best performance to be operated without outrigger.
Diversity of Purse Seine Vessels at Pekalongan Archipelago Fisheries Port (PPN) Above 100 Gross Tonnage Moch Ricky Dariansyah; Yopi Novita; Budhi Hascaryo Iskandar; Indra Jaya; Vita Rumanti Kurniawati
International Journal of Marine Engineering Innovation and Research Vol. 8 No. 3 (2023)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v8i3.5173

Abstract

This research aims to determine the diversity of purse seine vessels based on gross tonnage measurements which was carried out from April 2023 to July 2023. This study collected sampling data on purse seine vessels in the Pekalongan PPN, both when the vessels were berthed, and collective data sourced from the authorities Archipelago Fishing Port (PPN) Pekalongan. In this formulation, it begins with identifying the dimensions of the ship, measuring the volume of the fish hold and interviewing a number of crew members who work on the ship. The aim of this research is to identify the main dimensions of ships and describe the operation of purse seine ships. with an average ship size of over 100 gross tonnages to 200 gross tonnages with a crew of 35 to 40 people.
Fuel Saving Model on Seine Net Boats in Palabuhanratu Dwi Putra Yuwandana; Mohammad Fachrurezky Pahlevi; Vita Rumanti Kurniawati; Yopi Novita; Eko Sri Wiyono
International Journal of Marine Engineering Innovation and Research Vol. 10 No. 3 (2025)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v10i3

Abstract

Fuel oil is a critical input for seine net fishing in Palabuhanratu, yet its rising cost imposes a heavy burden on fishers and boat owners. Although fishers intuitively adjust engine power to reduce fuel use, the effectiveness of these practices remains unclear due to limited data. This study examines fuel consumption patterns of seine net boats and explores potential savings strategies. Data were collected on daily fuel use, vessel speed, trip duration, and operating distances across boats with engines of different ages. Results show that fishing trips follow eight distinct phases: preparation, outbound steaming, setting, hauling, fish hunting, resting, inbound steaming, and berthing. The highest fuel use occurs during fish hunting as well as outbound and inbound steaming, where high speeds and long durations dominate. Engine age strongly influences efficiency: a 6-month-old engine achieved a specific fuel consumption (SFC) of 328.42 g/kWh, compared to 499.33 g/kWh for a 7-year-old and 873.41 g/kWh for a 12-year-old engine. Simulation of reduced speeds during fuel-intensive phases suggests potential savings of 1.7%–21.7%, without compromising operational feasibility. These findings highlight the importance of managing vessel speed and engine condition to optimize fuel efficiency in seine net fisheries.
KARAKTERISTIK DESAIN DAN STABILITAS KAPAL BUBU LIPAT PENANGKAP RAJUNGAN DI KABUPATEN CIREBON Aulia Azhar Wahab; Budhi Hascryo Iskandar; Yopi Novita; Vita Rumanti Kurniawati; Uju Uju; Sudirman Sukardi
BAWAL Widya Riset Perikanan Tangkap Vol 18, No 1 (2026): April 2026
Publisher : Politeknik Kelautan dan Perikanan Sorong

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/bawal.18.1.2026.34-43

Abstract

Kapal bubu lipat merupakan armada utama perikanan rajungan skala kecil di Kabupaten Cirebon. Aktivitas penangkapan dan penanganan rajungan di atas kapal memerlukan desain kapal yang mampu mendukung kapasitas muat, efektivitas area kerja, dan stabilitas selama operasi. Penelitian ini bertujuan untuk menganalisis karakteristik desain, rasio dimensi utama, coefficient of fineness, dan stabilitas kapal bubu lipat penangkap rajungan di Kabupaten Cirebon. Penelitian dilakukan melalui observasi dan pengukuran langsung terhadap 20 kapal bubu lipat di Desa Gebang, Kabupaten Cirebon. Data dimensi utama dan bentuk lambung dimodelkan menggunakan perangkat lunak Maxsurf untuk memperoleh rancangan umum, rencana garis, parameter hidrostatik, dan kurva stabilitas kapal. Hasil penelitian menunjukkan bahwa kapal bubu lipat memiliki panjang 9,20–9,70 m, lebar 2,60–3,10 m, dan draft 0,40–0,50 m, dengan bentuk lambung U-bottom dan double pointed. Rasio L/B dan L/D berada dalam kisaran kapal static gear, sedangkan rasio B/D relatif tinggi. Nilai Cp, Cb, Cm, Cw, dan Cvp masing-masing sebesar 0,734; 0,711; 0,969; 0,796; dan 0,893, yang menunjukkan bentuk lambung full form. Seluruh parameter stabilitas memenuhi kriteria International Maritime Organization (IMO), dengan GZ maksimum 0,723 m pada sudut oleng 28,2° dan GM 3,742 m. Karakteristik tersebut menunjukkan bahwa kapal bubu lipat memiliki stabilitas yang baik dan sesuai untuk mendukung operasi penangkapan rajungan skala kecil.
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