Marine Fisheries : Journal of Marine Fisheries Technology and Management

Journal Information
ISSN / EISSN : 2087-4235 / 2541-1659
Current Publisher: Institut Pertanian Bogor (10.29244)
Total articles ≅ 182
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DOAJ
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Rois Syarif Qoidhul Haq, Mohammad Imron, Budi Hascaryo Iskandar
Marine Fisheries : Journal of Marine Fisheries Technology and Management, Volume 11, pp 13-21; doi:10.29244/jmf.v11i1.30180

Abstract:
Fiberglass aid vessels KM. Nelayan 2018 with a size of ≤5 gross tonnage not all can be directly used by local fishermen. Cilacap Regency received 7 aid vessel and it had to renovate. The renovation related to technical design factors, while it is still not yet be reviewed. This study aims to identify and compare differences in technical design factors between the aid vessel and the local vessel. Identification method by direct observation, including measurements of the main dimensions, shape of the hull and bow, general arrangement and working area. The identification data is compared to get the differences. Observation results show that the aid vessel have a ratio of L/D and L/B between local vessel values they are 8,96 from 7,72-9,20 and 13,33 from 12,92-14,11, but have the smallest value at B/D which is 1,49 from 1,51-1,71. The Hulls shape have same type, they are "u-bottom". The shape of the bow and the stern also have the same shape, they are raked bow and transom stern, but height of aid vessel bows is 1,9 m, it is higher than the average of local vessels which only 1,34 m. The height of the engine mount at the stern is also too high at 56 cm, while the average on the local vessel is 53 cm. The general arrangement and working area almost same. The vessel feature, safety and security factors of fishermen need to be improved in aid vessel. Keywords: feature, fiberglass fishing vessel, technical factor design
Andina Ramadhani Putri Pane, Reza Alnanda, Ali Suman
Marine Fisheries : Journal of Marine Fisheries Technology and Management, Volume 11, pp 1-12; doi:10.29244/jmf.v11i1.28168

Abstract:
Red mud crab (Scylla olivacea) is an economic commodity that is traded into foreign countries such as China, Malaysia, and Singapore so that fishing activities are carried out intensively. Therefore, we need scientific information about the status of red mud crab fishery stock. Information about the natural mortality, fishing mortality, and the exploitation level of crabs can be used as the basis for crab fisheries management. The study was conducted for 2 (two) years, February to October 2017, and March to December 2018 using the survey method. The results showed that 36% of the crabs were caught below the 120 mm size as regulated in Regulation of the Minister of Marine Affairs and Fisheries No. 12 Year 2020. The carapace width of the first capture (CWc) is smaller than the size of the carapace width of the first gonad maturity (CWm). This shows that the crab has been captured before the first gonad maturity (CWc < CWm). The growth rate (K) is 0.65 per year with fishing mortality (F) higher than natural mortality (M). Exploitation level (E) 0.70 which indicates that the status fisheries of red mud crab in Mimika have been overexploited. Efforts need to be done by the Regional Government in collaboration with local community leaders in providing counseling and information about the size of red mud crabs that can be caught and reduce efforts to use crabs by as much as 40% of what is currently done. Keywords: status explotation, red mud crabs, Mimika, FMA 718
Didin Komarudin, Mulyono Baskoro, Diniah Diniah, Bambang Murdiyanto, Pipih Suptijah
Marine Fisheries : Journal of Marine Fisheries Technology and Management, Volume 10, pp 177-186; doi:10.29244/jmf.v10i2.30844

The publisher has not yet granted permission to display this abstract.
Insaniah Rahimah, Vincentius Siregar, Syamsul Agus
Marine Fisheries : Journal of Marine Fisheries Technology and Management, Volume 10, pp 165-176; doi:10.29244/jmf.v10i2.30843

Abstract:
The blue swimming crab in the waters of Lancang Island is indicated as being overfished. Hence, the major challenge is managing its utilization in a proper manner. The purpose of this study is to explore the water's characteristics which is suitable for blue swimming crab fishing. Accordingly, the potential fishing ground around Lancang Island waters can be mapped spatially as an initial effort for species preservation. Geospatial analysis was applied to assess the physical parameters of the existing habitat. The results show that parameters such as MPT, TDS, brightness, phosphate, nitrate, depth and substrate types were remarkably suitable to support the growth of blue swimming crabs. Meanwhile, parameters such as salinity, DO, and temperature show lower quality which implied that the habitat is less suitable. However, the result of weighting and reclassification conclude that Lancang island waters is a decent habitat for blue swimming crab. Catch data show that 40% blue swimming crabs have small carapace size (7-11.83 cm) which is undersized and prohibited by law. Furthermore, about 68% of catch are quite light (30-147 gr) and the sex ratio of males to females was 1:2. It was also revealed that approximately 35% of female species were carrying eggs (BEF/barried female). Keywords: geospatial, fishing ground, suitability, Lancang Island, blue swimming crab.
Ernani Lubis, Anwar Bey Pane, Khoerul Fatoni
Marine Fisheries : Journal of Marine Fisheries Technology and Management, Volume 10, pp 193-204; doi:10.29244/jmf.v10i2.30852

Abstract:
Fishing port plays a vital role in providing fish raw materials (IBB) required for fish processing industries (IPI). The planning and development of IPI at Tasik Agung Rembang Coastal Fishing Port (PPP) rely on information regarding IBB supplies, however little data is available to support the decision. The purpose of this study was to investigate the origin of the IBB in fulfilling IPI demand for Pindang production and assess the IBB actual supplies (type, number, quality). A survey on the availability of IBB was conducted by involving various stakeholders including port officers, fishers, and IPI related entrepreneurs. Data collection consisted of both demand and supplies of IBB, which incorporate types, volume, and quality of fish. The results showed that the total demand for IBB was 824.8 ton/month and consisted of 9 species. However, the existing supplies of IBB only cover 59.5% of it. Keywords: raw materials, pindang, Tasik Agung fishing port
Rifky Ismail, Mohammad Tauviqirrahman, Deni Mulyana, Fiki Firdaus, J. Jamari
Marine Fisheries : Journal of Marine Fisheries Technology and Management, Volume 10, pp 187-192; doi:10.29244/jmf.v10i2.30845

The publisher has not yet granted permission to display this abstract.
Hasanudin Hasanudin, Totok Yulianto, Rizky Chandra Ariesta
Marine Fisheries : Journal of Marine Fisheries Technology and Management, Volume 10, pp 205-213; doi:10.29244/jmf.v10i2.30853

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. Keywords: outrigger, purse seiner, stability
Abdul Hamid, Syamsul Kamri
Marine Fisheries : Journal of Marine Fisheries Technology and Management, Volume 10, pp 215-224; doi:10.29244/jmf.v10i2.30855

The publisher has not yet granted permission to display this abstract.
Sunardi Sunardi, Achmad Baidowi, Eko Sulkhani Yulianto
Marine Fisheries : Journal of Marine Fisheries Technology and Management, Volume 10, pp 141-152; doi:10.29244/jmf.v10i2.29495

Abstract:
A gross tonnage (GT) is a volume capacity of fishing vessel regarding its role in the fisheries resource utilization and management affairs. Information regarding GT is important, hence there is a need to conduct measurement in objective manner. The result of GT recalculation conducted by the Ministry of Transportation on under 30 GT fishing vessels showed that there is a significant difference between the documented GT and recalculated GT which indicates a massive mark down. Consequently, most of owners decline the later result as it goes higher and has impact on operational cost. Regarding that problem, this paper investigates the GT calculation process in Indonesia. In order to provide objective measurement, this research compares the existing GT calculation method and numerical computation. The result reveals that both methods produced different GT, which is about 32% gap for fishing vessels in Muncar and 27% gap in Prigi.Keywords: Gross tonnage, fishing boat, measurement, numerical computation
A Fadillah, Shanty Manullang, Rizky Irvana
Marine Fisheries : Journal of Marine Fisheries Technology and Management, Volume 10, pp 117-128; doi:10.29244/jmf.v10i2.29313

Abstract:
Fishing boats are used in capturing or collecting aquatic resources. As a means of production, the boat should meet various conditions of seaworthiness i.e. good stability, good seakeeping ability and minimum resistance. Those criteria can be identified when the boat size and the hull form are designed. This study investigates the effect of the boat dimension and the hull form on the stability, resistance and seekeeping ability. Various sizes and hull shapes of a 20 GT fishing boat were simulated, and their performances were compared to the IMO standard. The results suggest that the minimum breadth (B) - draft (d) ratio which meets the stability criterion is 2.50, while the ratio of the center of gravity distance from the keel (KG) and the depth (D) of the boat is 0.65. Furthermore, for the boat with a higher B and D ratio, its resistance is relatively smaller. In terms of seakeeping ability, particularly roll and pitch motions, U type bottom performed better than the Akatsuki bottom. Keywords: fishing vessel, sea keeping, ship hull, stability, resistance
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