海洋渔业 Pub Date : 2019-11-11 DOI: 10.29244/jmf.v10i2.30845

R. Ismail, M. Tauviqirrahman, D. Mulyana, Fiki Firdaus, J. Jamari

{"title":"Redesigning of 4 (Four) Blades Propeller Installed in a Wooden Fishing Boat in a Ship Yard in Tegal, Central Java Province","authors":"R. Ismail, M. Tauviqirrahman, D. Mulyana, Fiki Firdaus, J. Jamari","doi":"10.29244/jmf.v10i2.30845","DOIUrl":"https://doi.org/10.29244/jmf.v10i2.30845","url":null,"abstract":"For design of marine propeller, the energy supply from marine engine to the propeller should be converted to thrust force with minimum losses. Furthermore, the unwanted vibration and cavitation due to the overlooking a detail calculation of the propeller should be prohibited for increasing the fuel efficiency and life-span of the propeller. In the last few decades, most of small and medium sized enterprises (SMEs) focusing their work on ship component industry in Central Java Province Indonesia provide the marine propeller to the ship manufacturer and ship repairmen in some shipyards in northern part of Central Java port. The design of the propeller is never been observed and optimized. The aim of the present work is to redesign the installed propeller on a wooden fishing boat with the new optimized design using B-Series propeller theory approach. The reverse engineering method uses three-dimensional scanner to obtain the geometrical data of the installed ship propeller. The new optimized propeller design is obtained from free software calculation based on the boat and engine specification. The comparison shows that the new optimized propeller design has a wider blade and larger pitch and increases 20% of the open water efficiency of the propeller performance at lower engine rotation. \u0000Keywords: B-series design, fishing boat, marine propeller, redesign, optimization","PeriodicalId":59401,"journal":{"name":"海洋渔业","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90292751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

MODIFIKASI KAPAL PURSE SEINE 30 GT DENGAN MENAMBAHKAN CADIK UNTUK MENINGKATKAN SURVIVAL OF INTACT STABILITY

海洋渔业 Pub Date : 2019-11-11 DOI: 10.29244/jmf.v10i2.30853

Hasanudin Hasanudin, Totok Yulianto, Rizky Chandra Ariesta

{"title":"MODIFIKASI KAPAL PURSE SEINE 30 GT DENGAN MENAMBAHKAN CADIK UNTUK MENINGKATKAN SURVIVAL OF INTACT STABILITY","authors":"Hasanudin Hasanudin, Totok Yulianto, Rizky Chandra Ariesta","doi":"10.29244/jmf.v10i2.30853","DOIUrl":"https://doi.org/10.29244/jmf.v10i2.30853","url":null,"abstract":"A fishing operation is a dangerous and high risk activity. Stability of the vessel plays an important role in performing safely and successfully fishing operations. A brand new 30 GT purse seiner, production of a traditional shipyard in Batang Regency, experienced 15o heel after its launch. This condition potentially affects the stability of the vessel. The purpose of the study is to analyze the vessel stability and improve existing stability by adding outriggers. Research was conducted in two phases, data collection in the research site and stability analysed using a naval architecture software. The vessel stability was analyzed in six loading scenarios following the fishing operation process, subsequently the stability was compared against IMO standard. Results show that with the existing design, the vessel does not meet IMO criteria for the most applied scenarios. Next step, outriggers were added in both sides of the vessel model, as an effort to improve its stability. Accordingly, it is revealed that outriggers addition is scientifically proven to improve the stability of the studied vessel. As this research merely focused on the stability improvement, further analysis regarding maneuverability is required given a purse seiner operates encircled fishing gear. \u0000Keywords: outrigger, purse seiner, stability","PeriodicalId":59401,"journal":{"name":"海洋渔业","volume":"54 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85589878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

KEANEKARAGAMAN JENIS IKAN HASIL TANGKAPAN SAMPINGAN (BYCATCH) PERIKANAN RAJUNGAN DI TELUK LASONGKO DAN KENDARI SULAWESI TENGGARA

海洋渔业 Pub Date : 2019-11-11 DOI: 10.29244/jmf.v10i2.30855

Abdul Hamid, Syamsul Kamri

{"title":"KEANEKARAGAMAN JENIS IKAN HASIL TANGKAPAN SAMPINGAN (BYCATCH) PERIKANAN RAJUNGAN DI TELUK LASONGKO DAN KENDARI SULAWESI TENGGARA","authors":"Abdul Hamid, Syamsul Kamri","doi":"10.29244/jmf.v10i2.30855","DOIUrl":"https://doi.org/10.29244/jmf.v10i2.30855","url":null,"abstract":"Information regarding the diversity of bycatch from blue swimming crab fishing operations is important in ecosystem-based management and assessment for Marine Stewardship Council (MSC) certification of crab fisheries in Southeast Sulawesi and Indonesia. However, data limitation becomes major challenges. This study aims to specify the types of bycatch caught from blue swimming crab fishing in Lasongko and Kendari Bay Southeast Sulawesi. This research was conducted in March to September 2019. Data was collected from trap and bottom gillnet fishing by using a purposive sampling method on a monthly basis. Bycatch was categorized into two groups, namely economically valuable and discarded, according to the local fishers’ perception. Information was presented both spatially and temporally. The results show that bycatch consists of 66 species including 41 economically valuable and 26 discarded species. Indices of diversity, evenness and dominance of fish were also discussed to describe the ecological conditions. Accordingly, this bycatch composition is able to support the management and assessment of MSC certification of crab fisheries in Southeast Sulawesi. \u0000Keywords: bycatch, fish diversity, blue swimming crab fisheries, Southeast Sulawesi.","PeriodicalId":59401,"journal":{"name":"海洋渔业","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79253114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

KARAKTERISTIK TALI AGEL BERKITOSAN SEBAGAI BAHAN ALAT PENANGKAPAN IKAN 作为一种捕鱼工具，动物带的特性是

海洋渔业 Pub Date : 2019-11-11 DOI: 10.29244/jmf.v10i2.30844

Didin Komarudin, M. Baskoro, Diniah Diniah, B. Murdiyanto, Pipih Suptijah

{"title":"KARAKTERISTIK TALI AGEL BERKITOSAN SEBAGAI BAHAN ALAT PENANGKAPAN IKAN","authors":"Didin Komarudin, M. Baskoro, Diniah Diniah, B. Murdiyanto, Pipih Suptijah","doi":"10.29244/jmf.v10i2.30844","DOIUrl":"https://doi.org/10.29244/jmf.v10i2.30844","url":null,"abstract":"Agel ropes have lower mechanical properties (breaking strength and elongation) than synthetic fiber ropes. Chitosan coating is expected to improve the mechanical properties of agel ropes. The aims of this study are to investigate the effect of immersion in chitosan on the physical and mechanical properties of agel ropes, and to examine the breaking strength and elongation of coated agel ropes after being soaked in both freshwater and seawater. This experimental study was conducted at the Laboratory of Fishing Gear Technology, Department of Fisheries Resources Utilization IPB University, and Laboratory of Forest Product Engineering, Department of Forest Products IPB University. The experiment involved 3 mm in diameter of two agel ropes incorporating control rope and agel rope soaked in 1% chitosan for 24 hours. The control rope was light brown, stiff, and rough, while the treated rope was darker, less stiff, and smoother. The breaking strength of control and treated rope was significantly different (P<0.05), which in respect constitute 15.06 kgf and 24.54 kgf. The elongation of both ropes were also significantly different (P<0.05), making 10,56% for control and 18,04% for treated rope. Breaking strength of the agel rope decreased by 50% after being immersed for 28 days. \u0000Keywords: agel rope, chitosan, breaking strength, elongation","PeriodicalId":59401,"journal":{"name":"海洋渔业","volume":"149 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90335876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

KEBUTUHAN IKAN BAHAN BAKU INDUSTRI PINDANG DI PELABUHAN PERIKANAN PANTAI TASIK AGUNG REMBANG 大雷邦沿海渔业的原料原料需求

海洋渔业 Pub Date : 2019-11-11 DOI: 10.29244/jmf.v10i2.30852

Ernani Lubis, A. B. Pane, Khoerul Fatoni

引用次数: 2

STUDI HASIL TANGKAPAN BYCATCH DAN DISCARD PADA PERIKANAN UDANG MANTIS (Harpiosquilla raphidea) MENGGUNAKAN ALAT TANGKAP GILLNET 螳螂虾捕捞和DISCARD渔业使用的是GILLNET渔具

海洋渔业 Pub Date : 2019-11-01 DOI: 10.29244/JMF.V10I2.29496

F. Ramdhani, N. Nofrizal, R. Jhonnerie

{"title":"STUDI HASIL TANGKAPAN BYCATCH DAN DISCARD PADA PERIKANAN UDANG MANTIS (Harpiosquilla raphidea) MENGGUNAKAN ALAT TANGKAP GILLNET","authors":"F. Ramdhani, N. Nofrizal, R. Jhonnerie","doi":"10.29244/JMF.V10I2.29496","DOIUrl":"https://doi.org/10.29244/JMF.V10I2.29496","url":null,"abstract":"Tanjung Jabung Barat Regency has a great potential for mantis shrimp (Harpiosquilla raphidea) resources. This commodity is highly valued, as its price range from Rp. 143,600 to 180,700 for each individual. Annually, the total catches constitute 125,000-225,000 individuals, which become one of export commodities to various countries. In Tanjung Jabung barat, the mantis shrimp has been caught by using gillnet with mesh size of 10 cm. Unfortunately, mantis shrimp fishing deal with a significant number of bycatch and discards, which potentially have negative impact on sustainable fisheries resources. Therefore, the purposes of this study was to emphasis on sustainable fishing effort of mantis shrimp and identify the composition and proportion of bycatch and discards. A series of surveys was conducted for collecting the amount of species caught by gillnet during mantis shrimp fishing operation. The result shows that the bycatch and discards dominated the total catches making up to 54.99% (7 species) and 22.69% (7 species) respectively. Mean while, the total of fishing catches for mantis shrimp was 22.32%.Keywords: bycatch, discards, gillnet, mantis shrimp (Harpiosquilla raphidea)","PeriodicalId":59401,"journal":{"name":"海洋渔业","volume":"111 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80584966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

STABILITAS, HAMBATAN DAN OLAH GERAK KAPAL IKAN MULTI PURPOSE NET/LINE HAULER 20 GT BERDASARKAN KAJIAN UKURAN DAN BENTUK KASKO KAPAL 多功能渔船NET/LINE拖着20 GT的稳定性、阻力和运动，根据船身的大小和形状

海洋渔业 Pub Date : 2019-11-01 DOI: 10.29244/JMF.V10I2.29313

Arif Fadillah, Shanty Manullang, Rizky Irvana

引用次数: 6

PERHITUNGAN GT KAPAL IKAN BERDASARKAN PERATURAN DI INDONESIA DAN PEMODELAN KAPAL DENGAN DIBANTU KOMPUTER (STUDI KASUS KAPAL IKAN MUNCAR DAN PRIGI) 根据印尼的规定计算GT渔船和计算机建模(MUNCAR和PRIGI渔船的案例研究)

海洋渔业 Pub Date : 2019-11-01 DOI: 10.29244/JMF.V10I2.29495

S. Sunardi, Ach. Baidowi, E. Yulianto

引用次数: 1

META ANALISIS PENGARUH TEKANAN PENANGKAPAN TERHADAP UKURAN RAJUNGAN (Portunus pelagicus) DI TELUK BANTEN 元数据分析了捕获压力对班腾湾的rajtunus pelagicus大小的影响

海洋渔业 Pub Date : 2019-11-01 DOI: 10.29244/JMF.V10I2.29483

A. Susanto, Ririn Irnawati, Mustahal, H. Nurdin, Yeni Marliana, Anggi Kurniasih, Niken Widowati, Tya Rizki Murniasih, Nuriman Affandi

{"title":"META ANALISIS PENGARUH TEKANAN PENANGKAPAN TERHADAP UKURAN RAJUNGAN (Portunus pelagicus) DI TELUK BANTEN","authors":"A. Susanto, Ririn Irnawati, Mustahal, H. Nurdin, Yeni Marliana, Anggi Kurniasih, Niken Widowati, Tya Rizki Murniasih, Nuriman Affandi","doi":"10.29244/JMF.V10I2.29483","DOIUrl":"https://doi.org/10.29244/JMF.V10I2.29483","url":null,"abstract":"Blue swimming crab (Portunus pelagicus) is an important economical fishery commodity for fishermen in Banten Bay that are caught using gill nets and collapsible traps. The increasing of fishing pressure has highly potential to reduce the quality of the catch as exposed in previous studies. However, the comprehensive, and time series analysis of the previous research results have not been conducted. The purpose of this study is to analyze the variations of blue swimming crab caught in Banten Bay through a combination of meta-analysis techniques, fishing trials and field obser-vations to determine the effect of fishing activities on swimming crab sizes, and evaluate the status of swimming crab fisheries in Banten Bay. Standard mean difference from 10 different studies was used as a meta-analysis parameter. The results of the meta-analysis showed that fishing activities were conducted from 2004 to 2018 had a significant effect on the decreasing of the swimming crab size. The average of swimming crab carapace width caught in 2019 approximately 121.66 mm. The proportion of legal swimming crabs in 2014, 2015 and 2019 was more than 80%, so that the status of swimming crab fisheries in Banten Bay is still environmentally friendly.Keywords: carapace width, meta analysis, fisheries, Portunus pelagicus, blue swimming crab","PeriodicalId":59401,"journal":{"name":"海洋渔业","volume":"129 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86767017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

DESAIN KONFIGURASI SISTEM PROPULSI HYBRID TERHADAP PENGURANGAN KONSUMSI BBM KAPAL PENANGKAP IKAN 30 GT (Configuration Design of a Hybrid Propulsion System to Reduce Fuel Oil Consumption of a 30 GT Fishing Vessel)

海洋渔业 Pub Date : 2019-06-01 DOI: 10.29244/JMF.10.1.1-9

A. Muhammad, Baharuddin, Hasnawiya Hasan

{"title":"DESAIN KONFIGURASI SISTEM PROPULSI HYBRID TERHADAP PENGURANGAN KONSUMSI BBM KAPAL PENANGKAP IKAN 30 GT (Configuration Design of a Hybrid Propulsion System to Reduce Fuel Oil Consumption of a 30 GT Fishing Vessel)","authors":"A. Muhammad, Baharuddin, Hasnawiya Hasan","doi":"10.29244/JMF.10.1.1-9","DOIUrl":"https://doi.org/10.29244/JMF.10.1.1-9","url":null,"abstract":"This study aims to reduce fuel oil consumption of a 30 GT fishing vessel through configuration design of diesel and electric motor hybrids propulsion system. The configuration design of hybrids propulsion system systematically include; i) loading assumption; ii) prediction of speed-thrust; iii) prediction of fuel oil consumption. Design of hybrids propulsion system was analyzed by using the concept of time domain simulation of vessel movement. The result indicated that the hybrids propulsion system implemented to fishing vessel was very effective to reduce fuel consumption compared with conventional propulsion system, especially in variation of loading and speed condition.Keywords: fishing vessel, hybrids propulsion system and fuel oilPenelitian ini bertujuan untuk mengurangi konsumsi bahan bakar minyak kapal penangkap ikan 30 GT melalui desain konfigurasi sistem propulsi hybrid diesel-listrik. Secara sistematis perancangan sistem propulsi hybrid meliputi; i) asumsi pembebanan operasi; ii) prediksi speed-thrust; iii) prediksi konsumsi bahan bakar. Desain sistem propulsi hybrid dianalisis dengan menggunakan konsep time domain simulation pergerakan kapal. Hasil penelitian menunjukkan bahwa penggunaan sistem propulsi hybrid pada kapal penangkap ikan sangat efektif dalam mengurangi konsumsi bahan bakar dibandingkan dengan sistem propulsi konvensional, terkhusus pada kondisi pemuatan dan kecepatan yang bervariasi.Kata kunci: Bahan bakar, kapal penangkap ikan, sistem propulsi hybrid","PeriodicalId":59401,"journal":{"name":"海洋渔业","volume":"74 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75629350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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