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Journal articles on the topic 'Fishing boats'
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1
Aydin, Muhsin, and Aydin Salci. "Geometrical Characteristics of Fishing Boats Series of ITU." Marine Technology and SNAME News 44, no. 02 (April 1, 2007): 125–37. http://dx.doi.org/10.5957/mt1.2007.44.2.125.
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In the present paper, first 13 hull forms of fishing boats with different block coefficients were generated. Later, 26 hull forms of fishing boats with two different ratios of length to beam were generated by utilizing previous hull forms of fishing boats mentioned. In total, 39 fishing boats were generated. This series is called "Fishing Boats Series of ITU" (Istanbul Technical University). In this Series, the forms of the body stations and beams of the boats are the same for equal block coefficient and different lengths. The ratio of the beam of any station at any waterline to the beam of boat, Bz/B varies with respect to block coefficient, CB. These variations have been represented with the third-degree polynomials. Thus, a hull form of the fishing boat in the desired length and block coefficient can be obtained by using these polynomials. For this purpose, a computer program called "Turetme" was developed. Finally, by using this program, three hull forms of fishing boats were obtained and presented here.
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Golam Rabbani, Md, Md Akhtaruzzaman Khan, M. Serajul Islam, and Rozina Yeasmin Lucky. "Technical Efficiency of the Setbag Net Fishery in Bangladesh: An Application of a Stochastic Production Frontier Model." Agriculturists 15, no. 2 (January 26, 2018): 59–65. http://dx.doi.org/10.3329/agric.v15i2.35465.
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A study was conducted to examine the technical efficiency for Setbag net fishing boats operated in the year 2014. A total of 100 samples of Setbag net fishing boats were selected, of which 40 were from Cox’s Bazar, 40 were from Chittagong and 20 were from Bagerhat. Stochastic frontier (with technical inefficiency effect) model was specified and estimated. Results have shown that the estimated mean technical efficiency of Setbag net fishing boats is 84 percent. The efficiency of Setbag net fishing boat was positively associated with total cost, while the number of nets were negatively related to fishing day and crew size. Head maji’s age had significant effect on inefficiency at 5% level. Although, the effect on boats’ efficiency was positive, (though insignificant) for head maji’s experience, head maji’s education, engine horse power and boat age. The use of modern fishing boat and improved fishing technology should be promoted, through proper training and motivation program for fisher. At the same time old and unfit fishing boat and gears should be gradually removed and replaced by new and modern fishing boat.The Agriculturists 2017; 15(2) 59-65
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Ahmad Ilham Ramadhani. "Feasibility of Electric Fishing Boats based on Evaluation of Hydrostatic Forces and Resistance." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 116, no. 2 (May 4, 2024): 75–87. http://dx.doi.org/10.37934/arfmts.116.2.7587.
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Conventional gasoline engine fishing boats have several disadvantages, such as high exhaust emissions, high fuel consumption, and low service life. The disadvantages of the gasoline engine can be resolved by using the electrical engine. Electrical fishing boats is an improvement on conventional boat to reduce the fuel consumption and emissions. In realizing an electric fishing boat, a feasibility analysis of the design, shape and weight that can be accommodated is required. The feasibility of an electric fishing boat has been successfully carried out by simulating the boat on Maxsurf Software. The aim of this research is to analyze feasibility of conventional boats by designing electric fishing boats. Improving feasibility is carried out by calculating hydrostatic forces and resistance. Electric fishing boats design using the simulation model in Maxsurf Modeller and simulation of resistance in Maxsurf Resistance at speeds of 1, 3 and 5 knots, with Wyman method. The modeling results show that the electric fishing boat design has a pointed front configuration with a V-shaped bottom. Main dimensions LoA 3.49 m, width 0.8 m; height 0.5 m; and a draft of 0.2 m, the boat produces a hydrostatic force which includes a displacement of 301.5 kg, a midship draft and submerged area of 0.2 m, a wet area of 3.08 m2, and a waterline of 0.5 – 1.5 m. Testing 1, 3, and 5 knots, the boat experienced resistance of 26.11 N, 234.96 N, and 652.73 N respectively. The power required for the boat to operate was 13,43 W, 362.66 W, and 1678,97 W. The feasibility of designing an electric fishing boat is the main key to developing an electric fishing boat.
4
Jung, Bong-Kyu, Cheor-Hong Park, and Won-Sam Choi. "Accuracy of GNSS Position Stored in Fishing Boat Location Transmitters in Comparison with That of DGPS Position." Journal of Marine Science and Engineering 11, no. 7 (June 23, 2023): 1277. http://dx.doi.org/10.3390/jmse11071277.
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Fishing boat laws in Korea require fishing boats to be equipped with a location transmitter. Approximately 91% of registered fishing boats have V-pass terminals, whereas those with a gross tonnage of 10 t or more have either V-pass or automatic identification system (AIS) terminals (or use both). Most navigators, including the fishing boat location transmitter, rely on the satellite signals provided by the global navigation satellite system (GNSS) without considering the accuracy of the navigation instruments that indicate ship location. Many scholars are conducting research to analyze the accuracy of GNSS locations through continuous experiments; however, few of them focus on fishing boat location transmitters. Particularly, the location accuracy of V-pass equipment is unknown. Notably, the V-pass and AIS terminals used in fishing boats are mainly designed to locate fishing boats in need of assistance following a marine accident rather than to provide information on approaching ships and preventing collisions. Therefore, this study aimed to compare GNSS location storage data extracted from the location transmitter (V-pass and AIS terminal) of the accident fishing boat with the DGPS location information from the Electronic Chart Display and Information System to check the position error and use it for accident analysis and investigation.
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Amuthakkannan, Rajakannu, K. Vijayalakshmi, Saleh Al Araimi, and Maamar Ali Saud Al Tobi. "A Review to do Fishermen Boat Automation with Artificial Intelligence for Sustainable Fishing Experience Ensuring Safety, Security, Navigation and Sharing Information for Omani Fishermen." Journal of Marine Science and Engineering 11, no. 3 (March 16, 2023): 630. http://dx.doi.org/10.3390/jmse11030630.
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Fishing wealth is one of the richest resources in the Sultanate of Oman. It is considered as one of the most important economic developments that nation depends on in a larger way. The Sultanate of Oman is characterized by the presence of a large fishing fleet as the number of fishing vessels and boats in it. Good research with the application of modern technology in fishermen boats is required to increase the quality of fishing by providing fishermen with a safe and secure fishing experience. Artificial intelligence (AI) in boat automation technology is new and it is a mandatory demand for Oman’s fisheries sector. At the time of fishing, there are a lot of problems fishermen face such as weather changes, border tracking, navigation, illegal fishing, pirate attack, oil spill, technical fault in boats, etc. Therefore, the application of AI and related techniques in boat automation, information sharing, and preparation of documentation resources is very important in this sector. The main requirement for a fisherman is a high-quality fishing boat with proper communication devices to provide all the required information to fishermen and the control room. In this paper, a review has been made on fishermen’s boats with artificial intelligence for a sustainable fishing experience ensuring safety, security, navigation, and sharing information for Omani fishermen.
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Weng, Jinxian, and Guorong Li. "Economic Loss Analysis of Fishing Boat Collisions Considering Spatial-Temporal Interaction Effects." Journal of Navigation 73, no. 5 (March 31, 2020): 1069–86. http://dx.doi.org/10.1017/s037346332000017x.
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Considering unobserved spatial-temporal interaction effects, this study proposes a Bayesian spatial-temporal interaction model for predicting economic loss from fishing boat collisions using 10-year (2004–2014) collision records from six different areas in the waters of Fujian, China. Results show strong spatial heterogeneity and correlation effects in fishing boat collisions, while the economic loss from boat collisions gradually decreases with the time trend. Collision time, collision location, visibility and the involvement of LNG/LPG/chemical-carrying ships show similar marginal effects on the economic loss for the two collision types: fishing boat collisions and collisions involving no fishing boats. Navigational status and the involvement of cargo ships exhibit much bigger effects in fishing boat collisions compared with collisions involving no fishing boat. Unlike collisions involving no fishing boat, fishing boat collisions are associated with reduced economic loss in poor weather conditions characterised by strong wind/waves because in Fujian waters additional safety measures are adopted for fishing boats in such conditions. The proposed model is useful for policymakers in adopting safety enhancement strategies to decrease the economic loss resulting from fishing boat collisions.
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Pahlevi, Mohammad Fachrurezky, Vita Rumanti Kurniawati, and Yopi Novita. "Suitability of engine power for small-sized fishing boats at the Palabuhanratu Fishing Port." BIO Web of Conferences 112 (2024): 03003. http://dx.doi.org/10.1051/bioconf/202411203003.
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Since fuel is a significant item in fishing operation, its high price becomes a burden for fishers and boat owners so they have to improve the economic efficiency of fishing operation. This study reviews the suitability of the dimensions of fishing boats with the power of the engine to determine a strategy in addressing an issue in fuel consumption. The suitability was assessed by comparing the existing engine power with the theoretical power required by the boats and the amount of fuel carried onboard during their fishing trips with the theoretical amount of fuel needed. The results showed that most small-sized boats at Palabuhanratu had engines with power more than the requirement, except for wooden boats that used 40 PK outboard motor engines. Fishers tend to carry fuel 62.1% more than the theoretical requirement because of the use of larger engines and the needs to bring spare fuel.
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Park, Cheor-Hong, Bong-Kyu Jung, and Won-Sam Choi. "Investigating the Reliability of the Location Transmitted by V-Pass Terminals: Prompt Rescue of Fishing Vessels." Journal of Marine Science and Engineering 11, no. 5 (May 11, 2023): 1023. http://dx.doi.org/10.3390/jmse11051023.
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Fishing boats are equipped to quickly rescue ships and save lives in the event of an incident at sea; therefore, determination of the incident location is imperative for a swift response. According to the 2021 marine accidents by ship use statistics, fishing and non-fishing boats accounted for 64.6 and 35.4%, respectively, of the total 3053 ships involved in an accident. In addition to V-pass and the Automatic Identification System (AIS), several other types of terminals exist; however, approximately 91% of all registered fishing boats use V-pass terminals. Therefore, it is essential to know the exact location of fishing boats. However, little research has been conducted on V-pass equipment. Therefore, in this study, marine experiments were conducted using V-pass and AIS terminals that are mainly used in fishing boats. To determine the exact location of an incident and rapidly respond and rescue, this study compared the data saved in the terminals with the data received by the Vessel Traffic Service center. In the event of a maritime incident, the radio shadow areas and causes of the error in the location transmitter must be investigated to quickly rescue the fishing boat and to determine the root cause of the incident, respectively.
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Salam, Aziz, and Zhulmaydin Chairil Fachrussyah. "ADAPTASI DAN INOVASI TEKNOLOGI PERAHU NELAYAN DAN ALAT TANGKAP TRADISIONAL DI TELUK TOMINI." Marine Fisheries : Journal of Marine Fisheries Technology and Management 12, no. 1 (October 6, 2021): 101–11. http://dx.doi.org/10.29244/jmf.v12i1.32940.
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The development of boat technology and traditional fishing gear, which is still predominantly used by fishing communities in Indonesia, appears to be running slowly. This study aims to determine the adaptations and technological innovations that have been applied in fishing communities for the development of capture fisheries technology in Tomini Gulf. Data and information about fishing boats and fishing gear in the form of types, functions, sizes, structures, pictures, raw materials, and changes in shape, changes in function, as well as adaptations and technological innovations that occur are obtained by field surveys conducted in fishing villages. Other data were obtained through in-depth interviews with fishermen and community leaders using interview grid instruments. Adaptations and innovations that occur in fishing boats include the use of bodi hull types on ketinting (long-tail outboard engine) boats and the use of fiberglass and PVC (Polyvinyl chloride) pipe as substitutes for wood and bamboo as raw materials for hull and outrigger buoys. The lampu suntik (waterproof lamp of LED sircuit in a used syringe plastic tube) is an innovation made on the totabito squid fishing gear. Adaptation and innovation in fisheries technology occurs part-by-part (partial) and requires proving success to gain wide acceptance.
Keywords: adaptation; innovation; techology; fishing boat; fishing gear; traditional.
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Lirazan, Machir Glib, Ericson Vince Ray Yulo, Maria Therese Kathleen Martir, Regie Antonette Salvilla, Jessica Oñate-Pacalioga, and Manuel Eduardo de la Paz. "Behavioral responses of Irrawaddy dolphins, Orcaella brevirostris (Owen in Grey, 1866) to fishing boats in a globally important marine mammal area in central Philippines." Palawan Scientist 14, no. 2 (December 26, 2022): 43–53. http://dx.doi.org/10.69721/tps.j.2022.14.2.06.
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The Irrawaddy dolphins, Orcaella brevirostris (Owen in Grey 1866) of Guimaras Strait, Philippines, have been known to utilize a core habitat within a coastal area surrounding the Bago River estuary in Negros Occidental. The dolphins’ close dependence on coastal waters often makes unavoidable direct interaction with human communities. Daily human activities in the coastal areas can pose serious threats to the dolphins, including high risk of entanglement in fishing nets, pollution, and disturbances caused by fishing boats and larger vessels. This study determined the behavior of dolphins toward different kinds of boats present in Bago-Pulupandan coastal waters. Factors identified to affect dolphin behavior towards boats include boat type (motorized or not), size, and distance from dolphins. Dolphin behavior towards boats were categorized as either positive, negative, or neutral. Results showed that the dolphins mostly exhibited neutral behavior towards boats, regardless of state and boat type. The dolphins’ passive behavior around vessels may make them more vulnerable to boat strikes, especially from speeding motorized boats. Recommendations include strict regulation of boat speed and traffic within their core habitat to minimize injuries, net entanglement, and avoid mortality.
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Marzuki, Marza Ihsan, Rinny Rahmania, Penny Dyah Kusumaningrum, Rudhy Akhwady, Daud Saputra Amare Sianturi, Yustisia Firdaus, Agus Sufyan, Cecep Ahmad Hatori, and Handy Chandra. "Fishing boat detection using Sentinel-1 validated with VIIRS Data." IOP Conference Series: Earth and Environmental Science 925, no. 1 (November 1, 2021): 012058. http://dx.doi.org/10.1088/1755-1315/925/1/012058.
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Abstract Detecting fishing boat activity is still a challenge for the biggest archipelago countries, such as Indonesia, to monitor the huge marine area. Space technology using sensors SAR to detect ships has been developed since 1985. However, the cost of using SAR images is one of the barriers to operational aspects, mainly for detecting fishing boats to deter IUU fishing activities. This research aims to evaluate the use of Sentinel 1-SAR imagery for identifying fishing boats from space. We used VIIRS data for validating the purposes. Both data sources could be accessed freely. The object detection process can be derived into three steps: pre-processing, object detection and object validation. We used the constant false alarm rate (CFAR) method to discriminate against objects at sea. To identify fishing vessels, we used the size of the vessels and the intensity of light captured by VIIRS. According to the findings, 21 boats were discovered using sentinel 1-SAR imagery and four boats using VIIRS data based on the the area of interest.
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Collet, Julien, and Henri Weimerskirch. "Albatrosses can memorize locations of predictable fishing boats but favour natural foraging." Proceedings of the Royal Society B: Biological Sciences 287, no. 1932 (August 5, 2020): 20200958. http://dx.doi.org/10.1098/rspb.2020.0958.
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Human activities generate food attracting many animals worldwide, causing major conservation issues. The spatio-temporal predictability of anthropogenic resources could reduce search costs for animals and mediate their attractiveness. We investigated this through GPS tracking in breeding black-browed albatrosses attracted to fishing boats. We tested for answers to the following questions. (i) Can future boat locations be anticipated from cues available to birds? (ii) Are birds able to appropriately use these cues to increase encounters? (iii) How frequently do birds use these cues? Boats were spatially persistent: birds searching in the direction where they previously attended boats would encounter twice as many boats compared with following a random direction strategy. A large proportion of birds did not use this cue: across pairs of consecutive trips ( n = 85), 51% of birds switched their foraging direction irrespective of previous boat encounters. Still, 15 birds (27%) were observed to closely approach (approx. 0.1–1 km) where they previously attended a boat while boats were no longer there. This is less than the distance expected by chance (approx. 10–100 km), based on permutation control procedures accounting for individual-specific spatial consistency, suggesting individuals could memorize where they encountered boats across consecutive trips. We conclude albatrosses were able to exploit predictive cues from recent boat encounters but most favoured alternative resources.
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Tran Duc Phu and To Van Phuong. "Assessing on coastal fishing activities and marine resources in Tuy An district, Phu Yen province." Tạp chí Khoa học - Công nghệ Thủy Sản, Trường Đại học Nha Trang, no. 04 (December 30, 2018): 053–59. http://dx.doi.org/10.53818/jfst.04.2018.417.
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Studying on fishing activities and marine resources protection in general, fishing in coastal area in particular play an important role in order to support fisheries authorities to proposing the reasonable solutions that based on scientific results. This study have implemented the case study of fishing activities on coastal of Tuy An district, Phu Yen province. The result showed that number of fishing boat was fluctuate from 1,172 in 2014 to 1,032 in 2018, mainly boats of range of less than 20 HP that account for around 51.4%, the range of 45 – 90 HP occupies about 7.6%. The mostly fishing gear is gill-net (56.8%). The fishing boats violated minimum mesh-size regulations are very popular, for example, mesh-size of lobster seed driftnet is smallest at 2 mm. Many fishing boats were IUU fishing such as trawl, driftnet etc. Also, fishermen’s awareness are low and limited in terms of fishing activities and resource protection that is cause of crucial decrease of marine resources. The solutions should be noted that alternatives, studying the marine resources stock, enhancing the fishermen awareness to sustainable fisheries.
Key words: fishing activities, marine resources, Tuy An district, Phu Yen province
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Robins, Carolyn M., You-Gan Wang, and David Die. "The impact of global positioning systems and plotters on fishing power in the northern prawn fishery, Australia." Canadian Journal of Fisheries and Aquatic Sciences 55, no. 7 (July 1, 1998): 1645–51. http://dx.doi.org/10.1139/f98-037.
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The impact of global positioning systems (GPS) and plotter systems on the relative fishing power of the northern prawn fishery fleet on tiger prawns (Penaeus esculentus Haswell, 1879, and P. semisulcatus de Haan, 1850) was investigated from commercial catch data. A generalized linear model was used to account for differences in fishing power between boats and changes in prawn abundance. It was found that boats that used a GPS alone had 4% greater fishing power than boats without a GPS. The addition of a plotter raised the power by 7% over boats without the equipment. For each year between the first to third that a fisher has been working with plotters, there is an additional 2 or 3% increase. It appears that when all boats have a GPS and plotter for at least 3 years, the fishing power of the fleet will increase by 12%. Management controls have reduced the efficiency of each boat and lowered the number of days available to fish, but this may not have been sufficient to counteract the increases. Further limits will be needed to maintain the desired levels of mortality.
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Maria Fe Novere E. Amor and Nerissa M. Pesquera. "FISH PROFILE OF BARANGAYS TUBAON, DISTRICT II, MERCEDES AND BALAGAWANIN SILAGO, SOUTHERN LEYTE." Journal of Science, Engineering and Technology (JSET) 2, no. 1 (December 10, 2014): 135–45. http://dx.doi.org/10.61569/h5sg5910.
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A total of 71 respondents categorized as artisanal or municipal sector fisherfolks were purposively chosen for the study. There were 31 different species of target fish caught by the fisherfolks in which Threespot angelfish, Rabbit Fish, Emperor, Grouper and Parrot Fish were the most common. Low catch per unit effort (CPUE) recorded in the four study sites was attributed to the traditional fishing gear sedu, the hook and line. Moreover, focus groups discussion results showed that the presence of fishers from other areas who used the fish finder technology and the increasing number of fisherfolks were the reasons for the decrease of the fish catch. The fishing vessels used were classified as municipal fishing boat (3GT or less). The majority (60%) were using non-motorized boats with paddles while the rest (40%) used motorized boats with 6-16HP. Fisherfolks-to-boat ratio was almost 1:1 which ranges from 1:0.89 to 1:1.15. Non-motorized boats were the most abundant fishing vessel used because the fishing ground was just 5-15 km away from shore. The low CPUE found in the four selected Barangays is an indicator of a heavily exploited fishing ground ecosystem and gradually, these resources will totally decline. It is recommended that the local government provides alternative sources of income through livelihood programs to lessen the fishing pressure and to improve the living conditions among the fisherfolks
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Mahasin Maulana Ahmad and Hermanto. "Economical Analysis On Fishing Boats For Fishermen In The Coast Of Banyu Urip, Ujung Pangkah, Gresik." Samakia : Jurnal Ilmu Perikanan 11, no. 1 (March 7, 2020): 26–33. http://dx.doi.org/10.35316/jsapi.v11i1.537.
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Banyu urip is one of the many villages in the north sea of Gresik. The main livelihood of community is fisherman. To bring it to life, the fisherman need decent fishing boats that is suitable for their age. The fishing boats in Banyu urip are 6-8 years old on average. The fishing boat use fishing nets and gears, and the main catch is shellfish and some other fish. In a year, fisherman can sail up to 200 trips. To develop that potential, an economic analysis need to be done related to the benefits of fishing boats for fisherman around the Banyu urip. The purpose of this research is to find out the initial investment costs, the expenses in one trip, average income of fisherman in a year and payback period of the investment. This research was conducted in several stages, calculate ship procurement costs, operational cost in one trip and also variable cost, so that expenses and income can be known. The next step is analysis of profitability and investment payback period. Based on the results of analysis and calculation, the investment value of the ship is obtained, the price, equipment, and engine of ship are 70 million rupias. Expenses in a year, fuel cost, lubricating oil cost, provision fees, ship repair cost and also depreciation expense are 27,399,101 rupias. The income of fishing boats are 62,266,666 rupias/year with 13.37 % Internal Rate of Return and the payback period is 1.6 years.
Key Words: Economical, Fisherman, Fish Boat, Banyu Urip
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Yuliadi, Yuliadi, Mohammad Taufan Asri Zaen, Marzuki Adami, and Abdul Gofur. "Implementasi Arduino Atmega pada Pompa Air Automatik Perahu Nelayan Gili Marinkik Lombok Timur." BEES: Bulletin of Electrical and Electronics Engineering 3, no. 1 (February 22, 2023): 1–7. http://dx.doi.org/10.47065/bees.v3i1.2443.
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Maringkik is a small island located in the south of the island of Lombok which is included in the territorial area of East Lombok Regency, West Nusa Tenggara. Gili Meringkik fishermen are active in catching fish using boats whose raw materials are made of wood which is prone to leakage. In the condition of a leak, the fishermen pump water into their boats or experience manual leakage continuously. Based on these problems, an automatic device is needed as a water pump in fishing boats to increase the amount of production. The device is a water pump on a boat using an Arduino microcontroller-based Ultrasonic Sensor. The research was conducted to build a water pump that enters the fishing boat automatically. The working system of this tool is if any water enters the bottom floor of the ship with the ultrasonic sensor water level when it detects the water level is, and the water pump will be active to immediately suck the water out of the ship so that the ship does not sink. This tool can help fishermen with removing the water that enters the boat. In addition, so that fishermen can easily control the boat from afar, this tool is able to discharge water on fishing boats automatically when the water level has exceeded the height limit, which interferes with sailing.
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Zain, Jonny, Pareng Rengi, and Mutiara Devi. "TIME EFFICIENCY OF LOADING OF FISHING SUPPLIES LIFTNET BOAT IN BUNGUS FISHING PORT WEST SUMATERA." Asian Journal of Aquatic Sciences 5, no. 1 (April 11, 2022): 131–37. http://dx.doi.org/10.31258/ajoas.5.1.131-137.
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This research was conducted from November to December 2020 using the survey method. The aim of this research is to find out what factors affect the efficiency level of loading time for liftnet boats on on Bungus Fishing Port. From the results of observations of 20 sample Boats that carried out fishing supplies filling activities, it showed that the amount of fuel, ice, water, the number of crew members and the boat tonnage affected the length of time wasted which resulted in the high and low level of efficiency of filling fishing supplies at sea. The results showed that the average efficiency level of filling fishing supplies on a boat at PPS Bungus was 67,18% or less efficient. The results also showed that the greatest length of time wasted was waiting for the arrival of ice (39.68%) followed by waiting for refueling time (36.03%), drinking time (14.71%) and smoking (9.58%).
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Mushthofa, R. Zainul, and Siti Aminah. "Sistem Bagi Hasil dalam Perspektif Hukum Islam Antara Pemilik Kapal Nelayan dan Anak Buah Kapal di Desa Paloh Paciran Lamongan." Ummul Qura: Jurnal Institut Pesantren Sunan Drajat (INSUD) Lamongan 15, no. 2 (October 31, 2020): 86–98. http://dx.doi.org/10.55352/uq.v15i2.158.
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The Muslim fishing community in Paloh Village, Paciran District, Lamongan Regency chooses and makes the sea a halal livelihood besides trading, because they liveon the coast of the Java sea. Almost all the men in the village work as crew members of fishing boats. For those who have capital, all the facilities and infrastructure at sea have been fulfilled, but for those who do not have capital, they are only members of a fishing boat. For those who do not have capital and want to become the leader of a fishing boat (Javanese: Jeragan), they seek capital not by borrowing money from banks or highrisk moneylenders, but looking for capital from rich people who want to build fishing boats for work. The principle of cooperation between fishing boat owners and skippers and their members already has arguments, which guide their lives as Muslims. The principle of cooperation that applies is whether it is completely in accordance with Islamic teachings or only partially or is it deviating, that is what the author needs to explore more deeply, so that the author intends to conduct this research.
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Tamarol, Joneidi, and Julius F. Wuaten. "DAERAH PENANGKAPAN IKAN TUNA (Thunnus sp.) DI SANGIHE, SULAWESI UTARA." JURNAL PERIKANAN DAN KELAUTAN TROPIS 9, no. 2 (August 1, 2013): 54. http://dx.doi.org/10.35800/jpkt.9.2.2013.4172.
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Penelitian ini bertujuan memetakan dan menginventarisir hasil tangkapan pancing tangan di Perairan Sangihe pada sembilan lokasi penangkapan ikan. Penangkapan ikan tuna di Perairan Sangihe terutama dengan menggunakan pancing tangan (tuna handline) yang oleh nelayan lokal dinamakan latage. Sarana tangkap yang biasa digunakan adalah perahu katir tipe pelang 3–5 HP; perahu katir tipe pumpboat 150 HP; kapal tipe lambut 150 HP. Hasil tangkapan perahu pelang yaitu tuna sirip kuning 2 ekor; perahu pumpboat yaitu cakalang 100 ekor dan panitang 402 ekor; kapal lambut yaitu madidihang 102 ekor; tuna mata besar 2 ekor. Madidihang paling tinggi tertangkap pada posisi geografis 3º47'N–125º19'E (ponton Marcopolo 03), sedangkan cakalang paling tinggi tertangkap pada posisi geografis 3º39'N–125º12'E (ponton Kendahe). Kata Kunci: tuna, penangkapan ikan, pancing tangan, latage, posisi geografis This study aims to map and to inventory the hand fishing catches in the waters of the Sangihe at nine fishing locations. Tuna fishing in the waters of the Sangihe mainly uses handlines (tuna handline) which is called latage by local fisherman. Fishing vessels used to catch tuna were pelang type 3–5 HP outrigger boats, pumpboat type 150 HP outrigger boat and lambut type 150 HP boats. The fish catches by each boat types were 2 yellow fin tunas by the pelang boats; 100 skipjacks and 402 panitangs by the pumpboat boats; and 102 yellow fin tunas and 2 big eye tunas by lambut boats. Highest number of yellowfin tunas was caught in the geographical position of 3º47'N–125º19'E (Marcopolo 03 pontoon) and while the highest number of skipjacks was caught in the geographical position of 3º39'N–125º12'E (Kendahe pontoon). Keywords: tuna, fishing, handline, latage, geographical position
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Tooley, A. M. J. "An Unusual Type of Model Boat." Journal of Egyptian Archaeology 72, no. 1 (August 1986): 189–92. http://dx.doi.org/10.1177/030751338607200118.
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A new category of model boat is proposed, based on the Merseyside County Museum model Liv. 55.82.17 and a comparison with similar models and reliefs depicting small, working boats. Five distinctive features distinguish this class from other model boats, as realistic representations of small, shallow water craft for fishing and cargo conveyance.
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Aguilar, Glenn D. "The Philippine Indigenous Outrigger Boat: Scaling Up, Performance and Safety." Marine Technology Society Journal 40, no. 3 (September 1, 2006): 69–78. http://dx.doi.org/10.4031/002533206787353277.
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The traditional indigenous double outrigger crafts, called banca boats, of the Philippines vary in size from the very small 4 meter single crew paddle boats to large 50 meter fishing vessels and passenger ferry boats. Regardless of size, the same construction techniques are used by native boat builders with wood as the main building material. Many hull forms, particularly economically important fishing boats, have been scaled up, resulting in problems related to the availability of wood for construction, safety at sea, and performance. Model experiments on craft performance show the hydrodynamic characteristics of the double outrigger form and describe characteristics important for design, construction, and operation of the crafts. The presence of outriggers has a definite effect on the heave, pitch, and roll motion of the craft as compared to the hull without an outrigger. Data analyses of maritime incident reports show a high percentage of capsizing by these motorized banca boats, highlighting the need for some regulation of their design and construction. Other concerns related to fisheries as being the main area of use of these boats are further discussed.
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Sakib, Md Nazmus, Md Robiul Hasan, and Md Akram Ullah. "Fishing gears and crafts used in Gumti river of Muradnagar upazila, Bangladesh." Asian Journal of Medical and Biological Research 6, no. 3 (October 17, 2020): 469–74. http://dx.doi.org/10.3329/ajmbr.v6i3.49795.
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The study describes traditional fishing gears and crafts available at Gumti river of Muradnagarupazila in Cumilla district, Bangladesh. The study was carried out by the collection of primary data through surveying individual fishermen. We found that there are 6 fishing gears available in the study area. Among them, 5 types of the fishing net (i.e., cast nets, seine net, lift net, push net, gill net) and a kind of fishing trap was identified. We also found 4 different types of crafts, including dinginauka, koshanauka, chandinauka, and sototempu. Synthetic twines are used for net making, which increases the fishing efficiency significantly. The life span of these nets varies according to their building materials. Sun-drying was the best approach for net preservation rather than using any chemicals or medicine. Besides, traditionally mehogany, raintree, shill koroi, garjan, gamari, jarul, chapulis woods and bamboos were found to be boat construction materials. The boats are painted with tar or pitch and burn oil for the protection. No modern instruments such as a compass, life-saving equipment are used by these boats. Most of the boats are mechanized, i.e. operated by engine.
Asian J. Med. Biol. Res. September 2020, 6(3): 469-474
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Muhammad hadi. "ANALISIS FINANSIAL JANGKA PENDEK USAHA KAPAL IKAN DI KABUPATEN KARIMUN." JURNAL JALASENA 2, no. 2 (February 2, 2021): 128–35. http://dx.doi.org/10.51742/jalasena.v2i2.289.
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Fishing by fishermen in the process is assisted by fishing tools. this tool is a fishing boat. Hereditary fishing boats have been made for use by fishermen to get fish, the increase in demand for fishing boat production will increase along with the growth of coastal communities. Karimun is one of the areas where the majority of the population works as fishermen, with this potential supporting the birth of local fishing boat producers. Local fishing boat producers are able to compete with good quality, with this potential this research was conducted to analyze the feasibility of fishing boat business in Pasuruan district with a short-term analysis which resulted in R / C value and profitability of fishing boat business in Karimun respectively 1.686 and 168.55% per year. The results obtained are more than the eligibility limit, so the wooden boatyard business in Karimun meets the feasibility value index to continue and develop the business.
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Mulyadi, Rama Agus, Aprilia Syah Putri, Dona Setya, and Hamidi Hamidi. "THE DESIGN OF FISHING BOATS MADE BY FIBERGLASS." JURNAL PERIKANAN TROPIS 8, no. 2 (October 1, 2021): 173. http://dx.doi.org/10.35308/jpt.v8i2.4591.
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As a means of transportation in the process of catching fish, ship must be owned by fishermen. The purpose of this study was to determine the durability of ship made of fiberglass material and to know when the ship run and stopped. This research was conducted for 4 months in a fishing laboratory assisted by 2 lecturers and 3 students. Students were involved in order to gain knowledge and experience in making boats made of fiberglass. With an experimental methods, data collection was done by direct observation of the design process, material testing, durability, and stability of the ship at sea. The results of this research were obtained in terms of making boats, in which it had a quite long stage starting from knowing the place where the boat was used, designing, making, and testing it in the manufacture. Thus, it is necessary to be careful during the work in order to get better results. Based on the endurance and leak tests, the boat had good resistance and did not leak, so it could be further developed.
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Luhulima, Richard Benny, Fella Gasperz, Obed Metekohy, and Helly Simon Lainsamputty. "Response Motion Analysis of Trimaran Fishing Vessels on Irregular Waves using CFD." International Journal of Progressive Sciences and Technologies 38, no. 1 (April 18, 2023): 162. http://dx.doi.org/10.52155/ijpsat.v38.1.5224.
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Ships must have good performance and economic value. The purpose of this research is to investigate the motion characteristics of trimaran fishing boats using Computational Fluid Dynamics simulations. The findings of this research are intended to improve a basic basis for the operation of trimaran fishing boats at the Fishing Ground. ANSYS AQWA describes trimaran ship motion response simulation effectively. For a wave direction angle of 1350, the trimaran's roll motion reaction is 10.131deg. With a pitch motion response of 6.5930 at wave direction of 1350, the Trimaran ship boasts the highest pitch motion response. The trimaran is excited by the wave direction angle of 1350. Because of the trimaran's enormous cross section at that angle. The 1350 wave direction angle is also crucial for trimaran ship operations.
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Sobsey, M. D., R. Perdue, M. Overton, and J. Fisher. "Factors influencing faecal contamination in coastal marinas." Water Science and Technology 47, no. 3 (February 1, 2003): 199–204. http://dx.doi.org/10.2166/wst.2003.0195.
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Recreational pleasure and fishing boats are potential sources of human faecal contamination because the sanitary wastes from boat occupants may be discharged into the surrounding water. The impacts of such faecal contamination from boats is potentially high in marinas where boats are often kept and occupied for varying periods of time. The nature and extent of such faecal contamination from boats in marinas of different design and use is still inadequately understood. In this study the levels of faecal coliform (FC) bacteria were measured in the waters of a confined and an open water marina over a 6 d period encompassing a holiday weekend. Levels of FC rose with increasing occupancy by boats and boaters during the study period and then declined again. FC levels were higher in waters of a confined or basin marina than in waters of an open or unconfined marina. In both confined and open water marinas, FC levels were highest in water samples collected near boats but they also became elevated on occasion in water samples taken a distance of 305 m from boats. Concentrations of FC in marina waters exceeded the standards and guidelines for shell-fishing and primary contact recreation waters. Therefore, greater consideration of human health risks from enteric microbes in marina waters and shellfish is recommended.
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Yang, Chih-Kai, Han-Chung Yang, and Jie-Min Lee. "Research on the Key Success Factors for the Transformation of the Traditional Fishery to Recreational Fishery in Taiwan’s Outlying Islands." Fishes 7, no. 6 (November 17, 2022): 337. http://dx.doi.org/10.3390/fishes7060337.
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Outlying islands are affected by the environment and economy, and fishery resources are the first to experience these impacts. Therefore, it is necessary to actively and effectively transform traditional fisheries in outlying islands. This is the case in Penghu County (Penghu Islands), located on the outlying islands of Taiwan. The transformation to recreational fishery can increase the additional income of traditional fisheries during the fishing moratorium through the development of recreational fishery boats by fishermen. Recreational fishery means the fishery using fishing vessels for recreational purposes or for passengers to harvest aquatic organisms on the reef or to engage in sightseeing on the islets. Therefore, this study will explore the key factors for the successful route planning of fishermen who switch to recreational fishery boats to assist the fishermen in successfully transitioning and enabling recreational fishery to flourish. In the research, using the method of the Analytic Hierarchy Process (AHP) expert questionnaire, it was found that the key factors affecting the route planning of recreational fishery boats are “boat conditions”, “berthing conditions”, “operating environment”, and “sightseeing potential”. After the expert questionnaire, a weight comparison of each level was performed, and it was found that “operating environment” was the most important factor, followed by “tourism potential”. However, the key factors of the “natural environment” and “cultural environment” are more important under the influence of the “operating environment”. Under the influence of “tourism potential”, “attractiveness” is a key factor, as is the “accessibility” factor. In this study, the four main fishing ports in Penghu County were also used for empirical discussion. The study results showed that Magong Fishing Port was the first choice for transformation, followed by Chikan Fishing Port. The results of this study can be used as a reference for fishermen and officials in developing a subsidy scheme for fishing boat operation, and they can be used as a reference for transforming traditional fisheries in outlying islands into recreational fishing to develop recreational fishery boats and leisure tourism industries. This research can help fishermen to attach importance to the development of recreational fishing activities and promote the stable growth of the fishery industry environment.
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Zhang, Liang, Bowen Xing, Xiao Chen, and Wugui Wang. "Ensemble Learning based Fishing Behavior Analysis for Vessels around Zhoushan Islands Erea." Journal of Physics: Conference Series 2213, no. 1 (March 1, 2022): 012012. http://dx.doi.org/10.1088/1742-6596/2213/1/012012.
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Abstract In order to improve and verify the application value of AIS data in fishing behavior analysis, three existing models were chosen to analyze the fishing paths of more than 200 boats around Zhoushan Islands. In order to confirm their operation mode, F1-score was used to evaluate related models. Experimental results shown that the Lightgbm model embodies better performance in the analysis of fishing boat behavior with higher practicality.
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Dağtekin, Murat, Serhan Candemir, Gökhan Erik, and Gülsüm Balçık Mısır. "Determinants of economic efficiency: A case study of Rapa whelk (Rapana venosa) fisheries in the South Black Sea." Ege Journal of Fisheries and Aquatic Sciences 39, no. 1 (March 15, 2022): 1–10. http://dx.doi.org/10.12714/egejfas.39.1.01.
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The inevitable increase in the numerical and technological capacity of fishing fleets in developed and developing countries has major implications for the management and distribution of limited natural resource capacity, as well as the ecological and socio-economic sustainability of fisheries. It is important to determine these effects to make the right decisions in fisheries management. This study aims to assess the fishing capacity, technical efficiency, scale efficiency, and capacity use in a specific subset of Rapa whelk fishers, those in Turkey's Black Sea. Economically efficient and inefficient boats were also compared in the study. The data obtained through face-to-face interviews with 452 boat owners constitute the main data of the study. Data were collected about the economic efficiency of the boats for one year. While economic efficiency ranged between 0.27 and 1, the average value was found to be 0.60. It was concluded that the age of the owner, the education period, and the length of the fishing boat positively affected economic efficiency (p<0.05). In the boats studied, technical efficiency scores were greater than economic efficiency scores. This suggests that rather than technical information, fishers require information on selecting the optimum input combination at the data cost level.
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da Silva Teles, Roosewelt, Mário César Vidal, and Michel Jean-Marie Thiolent. "An Intermethodological Articulation Experienced in an Ergonomic Setting of Fishing Boats Aiming at the Design, Ergonomics and Action-Research." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 44, no. 22 (July 2000): 658–61. http://dx.doi.org/10.1177/154193120004402243.
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This paper aims to show and to discuss some results of a large-time resarch upon the ergonomics problems of fishing in Cabo Frio, 200 km north far from Rio de Janeiro city. By working in a combined Ergonomic Action, Research-Action and Design Methodology perspective, we've looked for establishing the requisites and restraints concerning fishing boat projects, focusing the aspect of habitableness in a sea ambience, because the fishing boat is the workplace in this environment, and that makes it different from boats related to charge or people sea transport.
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Aida, Gilang Rusrita, Rhochmad Wahyu Illahi, and Tyas Dita Pramesthy. "Analisys of The Effect of Fisherman, Fishing Boat, and Fishery Ports on Catching Fisheries Production in East Java Province." Barakuda 45: Jurnal Ilmu Perikanan dan Kelautan 5, no. 1 (April 30, 2023): 35–44. http://dx.doi.org/10.47685/barakuda45.v5i1.338.
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The importance of the fisheries sector for East Java Province can be seen from the high capture fisheries production compared to other provinces di Indonesia. In 2021, East Java Province is listed as the province with the highest capture fisheries production in Indonesia. This is suspected to be affected by several factors i.e the numberi of fishermen, fishing vessels, and fishing ports, so analysis is needed to determinei the effect of these factors on capture fisheries in East Java. The aim of this studyi was to determine the effect of the amount of fishermen, fishing boats, and fishing ports on capture fisheries production in East Java. The research methodi used in this research iis descriptive using secondary data. The data analysis used is multiplei linear regression, F-test, and T-test. Based on the results, the multiple linear regression analysis were obtained by the equation y = 292.543,118 + 0,381 X1-0,722 X2 + 2.838,450 X3 with an adjusted R2 value of 72,7 %. The F test shows a isignificance <0,05, which meansi that the total number of fishermen, fishing boats, and fishing ports have a significant effecti simultaneously on capture fisheries production in East Java. The T-test shows that the numberi of fishing ports has a partially significant effect on marine capture fisheries production in East Java Province (sig. <0,05). Meanwhile, the number ofi fishermen and fishingi boats showed no partially significant effect oni capture fisheriesi production in East Java Province (sig. > 0,05).
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Zacardi, Diego, Yohanna Rabelo, and Luan Imbiriba. "CLASSIFICAÇÃO E DESCRIÇÃO TÉCNICA DAS EMBARCAÇÕES PESQUEIRAS ATUANTES EM SANTARÉM, ESTADO DO PARÁ." ACTA OF FISHERIES AND AQUATIC RESOURCES 9, no. 1 (2021): 19–37. http://dx.doi.org/10.46732/actafish.2012.9.1.19-37.
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This study aimed to characterize fishing boats in the municipality of Santarém. The data were collected through interviews carried out from January 2017 to December 2018, in places where the fishing fleet was busy and at various points the edge of the city. During this period, 150 semi-structured forms were applied mainly to the owners or agents of fishing boats and fishermen who landed fish, as well as the monitoring of landings and direct observations. The fishing boats in activity in the municipality and registered in the present study had dimensions varying from 3 to 20 meters in length, all units of the fishing fleet had the construction and structure in wood evidencing an artisanal production system. The fishing fleet was classified into seven categories: “cascos”, canoes, motorized canoes, “sapiaras”, “rabetão”, “bajaras” and “geleiras”, which differ in size, model and type of propulsion. The most frequent boats in the ports of Santarém were the group of canoes, in descending order of contribution, are the “rabetas”, canoes, “cascos”, “rabetão” and “sapiaras”, followed by the glaciers and “bajaras” boats. The physical conditions of the floodplain environment, with numerous canals, “paranás” and lakes that suffer fluctuations of the water level are determinant factors for the size of the boats justifying the great use of the hooves and canoes actually operating in the regional fishing activity, associated with a variation of fishing techniques that demand a differentiated means of transport. Therefore, this study proves that the fishing sector plays an important role in the regional economy, besides supplying the Santarém city.
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Lee, Donghun, Hyungju Kim, Kwiyeon Koo, and Sooyeon Kwon. "Human Reliability Analysis for Fishing Vessels in Korea Using Cognitive Reliability and Error Analysis Method (CREAM)." Sustainability 16, no. 9 (April 30, 2024): 3780. http://dx.doi.org/10.3390/su16093780.
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In this paper, we introduce a model designed to predict human error probability (HEP) in the context of fishing boat operations utilizing the cognitive reliability and error analysis method (CREAM). We conducted an analysis of potential accidents on fishing boats and calculated the cognitive failure probability (CFP) for each identified accident. The common performance conditions (CPCs) from the original CREAM were adapted to better reflect the conditions on fishing boats, with the adapted CPCs’ validity confirmed through expert consultations. To apply CREAM, data were gathered via a survey of fishermen, with the uncertainty in the collected data addressed through the application of fuzzy set theory (FST). We then established a Bayesian network (BN) model to elucidate the relationship between the fuzzy data and HEP, utilizing a weighted sum algorithm to determine conditional probabilities within the BN. Both basic and extended versions of CREAM were applied to analyze the most common accidents among fishermen, calculating the CFP for each type of accident. According to our analysis, the poorer the dynamic CPC, the higher the probability that a fall accident will occur inside the boat due to human error, necessitating a countermeasure. The paper proposes safety enhancements for small fishing boats and illustrates the increased precision of human reliability analysis (HRA) models in forecasting human error by incorporating quantitative methods. It calls for further data collection and refinement of the model for more accurate operational risk assessments.
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Aydin, Muhsin, and Aydin Salci. "Resistance Characteristics of Fishing Boats Series of ITU." Marine Technology and SNAME News 45, no. 04 (October 1, 2008): 194–210. http://dx.doi.org/10.5957/mt1.2008.45.4.194.
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This paper presents the results of the resistance and propulsion tests carried out during the development of the Fishing Boat Hull Form Series of ITU, providing the means of designing modern fishing boats capable of operating in the Black Sea, Marmara Sea, Aegean Sea, and the Mediterranean Sea. Initially, nine modern hull forms were generated using the hull forms of the traditional Turkish fishing boats. The model resistance tests of these fishing boats were carried out in the lightship, loaded, and highly loaded conditions. In the present paper, these hull forms are introduced, followed by a systematic presentation of comparative results illustrating the scale effects and the extrapolation diagrams, the influence of the block coefficient, the length to beam ratio, the type of stern, the shape of chine and the fore and aft trim on viscous resistance (form factor k), and wave-making resistance (wave-making resistance coefficient CW). The findings on the effects of some appendages such as the rudder, the heel of the rudder and the stern tube on the viscous resistance (form factor k), and the total resistance (total resistance coefficient CTs) are also illustrated. Finally, a general discussion of the results obtained from the resistance tests, wake measurement tests, and flow visualization tests are presented.
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Asano, Kazuhiko. "Optimum Speed for Fishing Boats." JOURNAL OF THE MARINE ENGINEERING SOCIETY IN JAPAN 25, no. 6 (1990): 372–75. http://dx.doi.org/10.5988/jime1966.25.372.
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Leek, Michael. "Traditional Fishing Boats of Europe." Mariner's Mirror 100, no. 4 (October 2, 2014): 493–94. http://dx.doi.org/10.1080/00253359.2014.954843.
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Korovessis, Panagiotis. "Fishing Boats in Mesologi Lake." Spine 35, no. 10 (May 2010): i. http://dx.doi.org/10.1097/01.brs.0000372108.50787.81.
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Rahman, Berri Miraz Kholipah, Wazir Mawardi, Muhammad Fedi Alfiadi Sondita, and Craig Proctor. "Estimation of Plastic and Other Waste Disposed of by Longline and Gillnet Fleets Operating from Cilacap." ILMU KELAUTAN: Indonesian Journal of Marine Sciences 27, no. 2 (January 8, 2022): 141–50. http://dx.doi.org/10.14710/ik.ijms.27.2.141-150.
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Tuna-fishing boats based at the Cilacap Oceanic Fishing Port are potential contributors to marine debris in the Indian Ocean. Without a quantitative assessment of the types and amount of debris, port management cannot develop a strategy to address this problem. This study estimated the quantities of plastics and cartons disposed of by these fisheries in the Indian Ocean. Data were collected through observations and interviews with boat managers/owners or fishermen in the port, from August to November 2019, to evaluate the boat supplies loaded on board in the port and the waste returned to the port. The marine disposal per fishing trip (the difference between the quantity of supplies taken to sea and the quantity of waste returned to port) was calculated for 89 trips of gillnet and longline boats, for a size range of 20 to 90 GT. There was no at-sea disposal of used engine oil, rice plastic sacks, styrofoam boxes, nor plastic gallon bottles. Other plastics and cartons from consumable packaging were disposed of at sea. The estimates of the plastic waste disposed were 0.8-4.4 kg.boat-1.trip-1 or 2,143-12,024 pieces.boat-1.trip-1 while the estimates of the cartons disposed were 3.5-19.4 kg.boat-1.trip-1 or 203-1,140 pieces.boat-1.trip-1. The study concluded that fishers could easily keep the waste onboard for disposal on return to port. In addition, port management should initiate a system in which the amounts of waste returned to boats returning to port are considered in granting future port clearance to those boats.
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Papale, Elena, Marta Azzolin, and Cristina Giacoma. "Vessel traffic affects bottlenose dolphin (Tursiops truncatus) behaviour in waters surrounding Lampedusa Island, south Italy." Journal of the Marine Biological Association of the United Kingdom 92, no. 8 (July 22, 2011): 1877–85. http://dx.doi.org/10.1017/s002531541100083x.
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Since 2003, as part of the LIFE project ‘Del.Ta.’ (NAT/IT/000163) a bottlenose dolphin community has been studied in order to assess the impact of increasing boat traffic in the Pelagie Archipelago (Sicily, Italy). During the summer of 2006 and 2008, land-based surveys were carried out at Lampedusa, one of the Archipelago's Islands, at set hours from 6 locations (7 in 2008) in standard weather conditions. Continuous horizon scanning and focal group sampling methods were used to study dolphin presence and behaviour. Dolphin–boat interactions were recorded for each sighting. A total of approximately 559 hours were spent monitoring and 83 sightings were recorded. With regard to the different types of vessels, interaction with sailing boats was always neutral, whereas fast boats caused the interruption of all activities and avoidance behaviour. Positive interaction occasionally occurred with bottom trawling fishing boats. Interactions recorded when fishing and powered engine boats approached within 200 m predominantly resulted in a negative reaction from the dolphins (approximately 70%) and dolphin behaviour was affected in terms of occurrence and patterns. Behavioural analysis showed that the animals reduced the frequency of behaviours related to feeding, social and relaxing activities. The dolphins also increased information-gathering behaviour such as spyhopping. The use of Markovian chain models revealed evidence of disruptions in sub-sequences made up of behaviours often associated with feeding. After boat departures, the animals rarely restarted their previous activity and persistence of this effect could have long-term consequences as a result of non-habituation. Sighting duration also decreased in the presence of vessels. The possible negative long-term effect of the presence of boats may be indicated by the lower mean sighting duration in 2008, when the highest presence of powered engine boats was recorded. In view of the scenario outlined above, local authorities need to enforce the requirement of maintaining a distance of over 200 m away from the animals for all types of boat and also promote regular land-based surveys of vessel impacts for tourist boats and dolphin watching cruises.
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Axelius, Bradley, I. N. S. Kumara, and W. G. Ariastina. "REVIEW RAGAM JENIS KAPAL PERIKANAN INDONESIA." Jurnal SPEKTRUM 9, no. 3 (September 29, 2022): 84. http://dx.doi.org/10.24843/spektrum.2022.v09.i03.p10.
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Indonesia as a maritime country with 2.23 million people working in the marine sector, one of which is a fisherman. Fishermen are one part of the fishing unit that plays a very important role for the success of a fishing operation. This paper reviews the fleet of vessels used by fishermen in Indonesia. The research method is a literature study taken from books, papers, the internet, and other sources that can support. The results of the review show that in carrying out fishing activities, fishermen in Indonesia use traditional and modern boats or boats. Types of boats or ships are divided into several categories. Depending on the type of fishing gear such as purse seine, trawls, dredge net, lift net, gill net, pole and line, long line, tonda ship, jungkung, and based on the propulsion system and ship size divided into powered boat and non-powered boat. In the operation of the ship, electricity is supplied by generators or batteries or batteries. To drive the sailing ship, a motorized engine is used, which is divided into inboard and outboard engines based on the layout, and is categorized into marine diesel engines and marineized engines based on their design and designation. On the other hand, to optimize the production of potential fisheries resources owned by Indonesia, it is necessary to increase the number of ships. The fluctuating growth in the number of vessels from 2002 to 2016, with the largest number of vessels amounting to 815,544 units in 2014 has not been able to maximize production from this potential. The Indonesian shipbuilding industry has also not developed in line with the challenges it faces. Development is still lagging behind the capacity, potential, demands and demands of the market. As well as social organizations also have an important role to increase capture fisheries production by providing guidanceThe information presented is expected to help the interests of the community such as the central government, local governments, researchers, students, and anyone who is interested in supporting the field of fishing vessels in Indonesia, especially the application of solar power plants on fishing boats.
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Nikmatullah, Muhammad Iqbal, Baharuddin Baharuddin, Zulkifli Zulkifli, Muhammad Rusydi Alwi, and Andi Husni Sitepu. "Modification of Traditional Fishing Boat Outriggers into a Simple Electric Power Plant." Indonesian Journal of Maritime Technology 1, no. 2 (December 18, 2023): 65–70. http://dx.doi.org/10.35718/ismatech.v1i2.1050.
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The outrigger is one of the components of the boat attached to the outside of the boat. Outrigger has a fairly vital function because it can make the boat stable when fishermen do activities at sea. This study aims to determine the potential of electrical energy that can be generated in the outrigger. In this study, the outrigger shape was modified so that the water flow could be directed into the outrigger cylinder and rotate the turbine to produce electrical energy. This modification was carried out without eliminating the main function of the outrigger supporting the stability of fishing boats. The electrical energy produced is stored in the battery to be used as a source of electricity for lighting at night. The results of this study indicate that the electrical energy produced by outriggers can be used as a source of lighting for traditional fishing boats. However, further research is still needed to determine the loss of ship resistance with this modification.
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Romahdoni, Muhammad Reza, Mezan El-Khaeri Kesuma, Muhammad Yusril Mahesa, and Dadang Hartabela. "DESIGN OF FISHING SHIP MONITORING INFORMATION SYSTEM CASE STUDY IN THE MARINE AND FISHERY RESOURCES SUPERVISION UNIT." Asia Information System Journal 1, no. 1 (May 31, 2022): 8. http://dx.doi.org/10.24042/aisj.v1i1.13621.
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The Marine and Fishery Resources Supervision Work Unit (SATKER PSDKP) Lempasing Bandar Lampung is a Unit or Work Unit under the Jakarta Marine and Fishery Resources Supervision Base which is indirectly mandated by Law Number 45 of 2009 concerning amendments to Law number 31 of 2004 on fisheries. The web-based fishing boat monitoring application makes it easy for admins to find out the position of fishing boats and can send SMS Gateway messages to fishermen. Where the admin can detect the location of fishing boats by utilizing the android device used by fishermen and Google Maps Fire. This web-based monitoring is built using PHP, MySQL, GAMMU and bootstrap while the development method is Structured System Analysis and Design (SSAD). This monitoring will provide convenience for the Admin and the captain in detecting the location of the ship and the destination of the ship in looking for fish at sea
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Corbeau, A., J. Collet, A. Pajot, R. Joo, T. Thellier, and H. Weimerskirch. "Differences in foraging habitat result in contrasting fisheries interactions in two albatross populations." Marine Ecology Progress Series 663 (March 31, 2021): 197–208. http://dx.doi.org/10.3354/meps13648.
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Albatrosses attend fishing boats to feed on fishing discards but are often at risk of accidental bycatch. To examine whether populations (same species) and sexes differ in their overlap with fisheries due to differences in habitat use, we combined the use of recently developed loggers equipped with GPS and boat radar detectors with Automatic Identification System (AIS) data. Our study indicates that incubating wandering albatrosses Diomedea exulans from Crozet and Kerguelen foraged in different habitats although the duration of trips was similar. Both female and male Kerguelen birds took advantage of the large and productive surrounding shelf, whereas Crozet birds used the small shelf around the islands to a lesser extent. In Crozet, there was segregation between males and females, the latter favouring deeper and warmer waters. The 2 strategies of habitat use led to different overlap and attraction to boats, with Kerguelen birds encountering and attending boats for longer and at closer proximity to the colony than Crozet birds. Crozet females encountered boats at greater distances from the colony than males. Because of their different habitat use and foraging outside exclusive economic zones (EEZ) and further from the colony, Crozet birds attended more non-declared boats (without AIS) than Kerguelen birds. Albatrosses were more attracted by fisheries than cargo vessels and were especially attracted by fishing discards that led them to attend vessels for longer periods for both sexes and populations. The differences found between populations and individuals in terms of habitat specialization and encounter rate of fisheries should be considered for future assessments of risk of bycatch.
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Darmawan, Akbar Bagus, Yeddid Yonatan Eka Darma, and Jangka Rulianto. "Analysis The Effect of Outrigger (Cadik) Variations on Motion Response of Fishing Boat Using CFD Method." IOP Conference Series: Earth and Environmental Science 1081, no. 1 (September 1, 2022): 012010. http://dx.doi.org/10.1088/1755-1315/1081/1/012010.
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Abstract Jukung is a type of traditional fishing boat used as transportation for fishing activities in Muncar, Banyuwangi, which has a wave as high as 2 m with a period of 4.6 s which is classified as 2nd sea state. One of the boats used has a length of 7.2 m, width 0.75 m, and height of 0.8 m. The characteristics of the hull which with an L/B ratio of 9.6 require outriggers to help balance while sailing. The outrigger itself is a cylindrical component that is placed at a certain distance on both sides of the boat. Since ancient times, the construction of outrigger boats has been carried out by local artisans by relying on experience. This is certainly very risky because it is not known for certain whether the construction, in this case, the outrigger can keep the boat stable. For this reason, we researched the boat’s motion using the CFD method to provide a reference for the construction of the outrigger design. Using one of the existing boats with LOA 7.2 m, B 0.671 m, and H 0.8 m, and Vs 4.385 kt as a simulation model, we varied the outrigger-centerline distance by 2.5 m and 2.8 m; diameters of 90 mm, 120 mm, and 150 mm; which tested under conditions of full load and light load with the wave directions of headsea (180°), headquarter (135°), and beamsea (90°), resulting in Response Amplitude Operator (RAO) as follows. The model with an outrigger-CL distance of 2.8 m and diameter of 150 mm has the lowest heaving value of 0.02 m/m at a frequency of 4.1 rad/s from the headsea direction, 0.44 m/m at a frequency of 3.7 rad/s from the headquarter direction, and 0.4 m/m at a frequency of 6.2 rad/s from the beamsea direction. This model also has the lowest value in pitching and rolling responses from all directions with each value of 0.4 rad/m to 0.15 rad/m in pitching and relatively 0 rad/m in rolling responses.
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Wang, Guoqing, En Fan, Guohua Zheng, Kexiang Li, and Haiguang Huang. "Research on Vessel Speed Heading and Collision Detection Method Based on AIS Data." Mobile Information Systems 2022 (September 16, 2022): 1–10. http://dx.doi.org/10.1155/2022/7257075.
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In order to better predict the sailing information data of fishing boats, make accurate prediction and spacing budget for the sailing status of ships, achieve more accurate coordination and early warning in advance, and ensure the safety of fishing boats’ laneway, the essay combined the kinematics equation and artificial neural network model to adapt to the traffic situation of fishing boats in the far sea. A course and collision test technique based on ship AIS data is proposed, and the course collision detection method of fishing boats is studied by means of actual ship beacon collision accident data. Through the practical test, taking the navigation mark 4560.117 as an example, under the detection track of the navigation mark field corresponding to R = 70, the two ships have the same track, thus verifying the practicality and feasibility of the ship navigation mark collision detection method.
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Utari, Dian Asa, M. Basuki Rahmat, I. Putu Arta Wibawa, Arie Indartono, Eko Setijadi, and Sri Wiwoho Mudjanarko. "Evaluation of Radar Reflector Design for Traditional Fishermen in Banyuwangi." SPIRIT OF SOCIETY JOURNAL 5, no. 1 (September 30, 2021): 74–79. http://dx.doi.org/10.29138/scj.v5i1.1557.
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Every fishing boat owned by fishermen in the Muncar Harbor area of Banyuwangi is always decorated. In addition to beautifying the ship, they also provide enthusiasm for work. Various decorations used include the shape of the dome of the mosque and the shape of a butterfly. Although technically all ornaments do not support their safety at sea. Accidents, namely the collision of traditional fishing vessels by large commercial vessels often occur. because the area of operation of traditional fishermen is the trajectory of large commercial ships. Many accidents occur because the presence of fishing boats is not detected by commercial vessels. because most traditional fishing boats are made of materials that do not reflect the radar signals of large vessels. For this reason, it is very necessary to install a reflector radar, which is a passive radar that serves to increase the object’s Radar Cross Section value. This radar can be mounted on fishing vessels so that the reflected energy from this radar reflector can be recognized by large ships. This article describes designs that are in demand by traditional fishermen in the Muncar area of Banyuwangi.
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Xing, Bowen, Liang Zhang, Zhenchong Liu, Hengjiang Sheng, Fujia Bi, and Jingxiang Xu. "The Study of Fishing Vessel Behavior Identification Based on AIS Data: A Case Study of the East China Sea." Journal of Marine Science and Engineering 11, no. 5 (May 22, 2023): 1093. http://dx.doi.org/10.3390/jmse11051093.
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The goal of this paper is to strengthen the supervision of fishing behavior in the East China Sea and effectively ensure the sustainable development of fishery resources. Based on AIS data, this paper analyzes three types of fishing boats (purse seine operation, gill net operation and trawl operation) and uses the cubic spline interpolation algorithm to optimize the ship trajectory and construct high-dimensional features. It proposes a new coding method for fishing boat trajectory sequences. This method uses the Geohash algorithm to divide the East China Sea into grids and generate corresponding numbers. Then, the ship trajectory is mapped to the grid, the fishing boat trajectory points are associated with the divided grid, and the ship trajectory ID is extracted from the corresponding grid. The extracted complete trajectory sequence passes through the CBOW (continuous bag of words) model, and the correlation of trajectory points is fully learned. Finally, the fishing boat trajectory is converted from coordinate sequence to trajectory vector, and the processed trajectory sequence is trained by the LightGBM algorithm. In order to obtain the optimal classification effect, the optimal superparameter combination is selected. We put forward a LightGBM algorithm based on the Bayesian optimization algorithm, and obtained the classification results of three kinds of fishing boats. The final result was evaluated using the F1_score. Experimental results show that the F1_score trained with the proposed trajectory vectorization method is the highest, with a training accuracy of 0.925. Compared to XgBoost and CatBoost, the F1_score increased by 1.8% and 1.2%, respectively. The results show that this algorithm demonstrates strong applicability and effectiveness in fishery area evaluations and is significant for strengthening fishery resource management.
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Li, Kaipeng, Yunge Wang, Yuan Shao, and Xingxiao Wu. "Smart Boat Detection Based on Feature Pyramid Network and Deformable Convolution." Journal of Physics: Conference Series 2083, no. 4 (November 1, 2021): 042018. http://dx.doi.org/10.1088/1742-6596/2083/4/042018.
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Abstract The submarine cable guarantees the electricity and communication of the island residents. The operation of fishing boats poses a major threat to the submarine cable. Due to the complex environment, manual monitoring has defects such as strong subjective factors and easy fatigue. The paper adopts the intelligent monitoring method, using the object detection algorithm based on deep learning and the camera to monitor the boats on the sea. Use feature pyramid network to enhance the detection of smaller and farther boats. Use deformable convolution to solve the problem of few samples. Experimental results show that model can detect boats. The detection ability of the feature pyramid network is stronger, especially for the distant and smaller boat targets. Using deformable convolution can improve the accuracy of models trained on small dataset.
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Wuaten, Julius Frans, Ishak Bawias, and Rafles Kawowode. "PROSES FINISHING PEMBUATAN KAPAL PAJEKO (MINI PURSE SEINER) DI KAMPUNG PARA I KECAMATAN TATOARENG." Jurnal Ilmiah Tindalung 7, no. 2 (August 22, 2021): 22–28. http://dx.doi.org/10.54484/jit.v7i2.396.
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Abstrak: . Salah satu lokasi tempat pembuatan kapal penangkap ikan yang ada di Kabupaten Kepulauan Sangihe yaitu di Kampung Para I Kecamatan Tatoareng. Masyarakat nelayan yang ada di Kampung Para I pada umumnya memiliki kemampuan dan keahlian dalam membuat unit perahu/kapal penangkap ikan yang diperolehnya secara turun temurun dari orang tua dan nenek moyang mereka. Hampir setiap tahun, nelayan pembuat kapal di Kampung Para I memproduksi kapal penangkap ikan dari bahan kayu, pesanan dari nelayan yang ada di sekitar Pulau Para maupun dari luar pulau. Penelitian ini dilakukan untuk melihat secara langsung proses pembuatan kapal penangkap ikan dari bahan kayu, khususnya dalam proses finishing kapal pajeko. Metode yang digunakan yaitu metode deskriptif, dengan menggambarkan atau menguraikan kejadian di lapangan dalam bentuk laporan, tanpa mengurangi atau menambah informasi yang ada di lapangan. Teknik pengumpulan data dilakukan dengan melakukan wawancara dengan nelayan pembuat kapal, pengamatan langsung dan partisipasi dalam proses finishing meliputi pemakalan, pendumpulan, dan pengecatan kapal. Proses finishing dalam pembuatan kapal pajeko berbahan baku kayu di Kampung Para 1 Kecamatan Tatoreng semuanya dilakukan secara tradisional dan pengerjaannya dilakukan oleh nelayan setempat, mulai dari proses memakal, mendempul dan mengecat dengan peralatan yang sederhana.
Abtract: One of the locations for fishing boats in Sangihe Islands Regency is Para Village 1, Tatoareng District. The fishing communities in Para Village 1 generally have the ability and expertise to build fishing boats / vessels, which they have from generation to generation from their parents and ancestors. Almost every year, fishermen who build boats in Para I Village produce fishing boats made of wood, orders from fishermen around Para Island and from outside the island. This research was conducted to see firsthand, the process of making fishing boats from wood, especially in the finishing process of the pajeko boat. The method used is descriptive method, by describing the events in the field, to the form of reports, without reducing or adding to the information in the field. Data collection techniques are carried out by conducting interviews with shipbuilders, direct observation and participation in the shipbuilding finishing process including ‘pemakalan’, ‘pendumpulan’, and ship painting. The finishing process in making pajeko boats made of wood in Para Village 1, Tatoreng District, is all done traditionally and the work is done by local fishermen, starting from the process of ‘pemakalan’, ‘pendumpulan’ and painting with simple equipment.