scholarly journals FISHING BOAT DISTRIBUTION ESTABLISHED BY COMPARING VMS AND VIIRS DATA AROUND THE ARU ISLANDS IN MALUKU INDONESIA

2021 ◽  
Vol 18 (1) ◽  
pp. 53
Author(s):  
Ruben Van Beek ◽  
Jonson Lumban Gaol ◽  
Syamsul Bahri Agus
Keyword(s):  
Light Emitting Diode ◽  
R Package ◽  
Purse Seine ◽  
Fishing Vessel ◽  
Night Time ◽  
Led Light ◽  
Identification Rate ◽  
Fishing Boat ◽  
Fishing Vessels ◽  
Arafura Sea

Marine protected areas (MPAs) and no take zones (NTZs) are essential for the preservation of marine ecosystems. However, these important areas can be severely harmed by illegal fishing. All vessels above 30 gross tons are required to use vessel monitoring systems (VMSs) that enable vessel tracking by sending geographic data to satellites in each specific time period. The Visible Infrared Radiometer Suite (VIIRS) is a sensor on the National Oceanic and Atmospheric Administration (NOAA)-20 satellite that can detect the light-emitting diode (LED) light used by fishing vessels from space during the night time. In this research, VMS and VIIRS fishery data were combined in order to identify fishing vessels that were detected by the VIIRS sensor of the NOAA-20 satellite. The research was focused on an area near the Aru Islands in the Arafura Sea in Indonesia. Data on LED light used by the fishing techniques of purse seine and bouke ami were obtained for the whole of 2018. The data were then processed using R software. An R package called LLFI (LED Light Fisheries Identifier) was created, containing several R-functions that calculate VMS vessel position during satellite overpass time and then combine the VMS and VIIRS data attributes, resulting in a dataset comprising vessels identified from the VIIRS dataset. Out of all the estimated VMS fishing vessel positions during the VIIRS satellite overpass, approximately 51% could be assigned to fishing vessels detected from the VIIRS dataset. For bouke ami, the identification rate was approximately 87%, while that for small purse seine was around 39%. Ultimately, the LLFI package created daily paths for each identified fishing vessel, displaying all its movements during the day of its’identification. These daily paths did not show any activity within MPA or NTZ. The LLFI package was successful in combining VMS and VIIRS data, estimating VMS vessel positions during the VIIRS satellite overpass, identifying a percentage of  the vessels, and creating a daily path for each identified vessel. 

The Study of Ducted Propeller in Propulsion Performance of a Malaysia Fishing Boat

2015 ◽  
Vol 74 (5) ◽  
Author(s):  
Koh K. K. ◽  
Omar Y. ◽  
Azreen E. ◽  
Nurhaslinda K.
Keyword(s):  
Fishing Vessel ◽  
Previous Researcher ◽  
Characteristic Model ◽  
Fishing Boat ◽  
Propulsion Performance ◽  
Fishing Vessels ◽  
Ducted Propeller ◽  
Design Selection ◽  
Design Characteristics ◽  
Selection Of

Through the installation of ducted propeller,fishing vessels are able to operate with more towing power and will be more economic in terms of fuel usage. The application of the shroud or ring to the propeller made the propeller more practical for tugs, pushboat, supply ship and trawler. The study of this paper is focused on the propulsive performance by ducted propeller when operating at tow speed and low rpm. From the research on the ducted propeller, the design characteristics such as length-diameter ratio and thickness-length ratio are determine from the chart provided by previous researcher. The design selection of nozzle is done with the use of CFD program, Javafoil to analyze the flows of the profile and it’s characteristic. Model tests were conducted by using a 26m fishing boat model with and without nozzle.It is foundthat by using ducted propeller to a fishing vessel, thrust can be increase up to 23%. 

scholarly journals Certification of fisheries human rights and its impact to protecting the rights of fishing vessel crew

2021 ◽  
Vol 29 (1) ◽  
pp. 63-81
Author(s):  
Muhammad Nur ◽  
M. Hajir Susanto
Keyword(s):  
Human Rights ◽  
Human Rights Violations ◽  
Human Beings ◽  
Fishing Vessel ◽  
Literature Study ◽  
Indonesian Seas ◽  
Fishing Boat ◽  
Fishing Vessels ◽  
The Government ◽  
Cooperation System

The crew of fishing vessels is human beings, the absolute owners of human rights that have been universally recognized. To anticipate and overcome many human rights violations in the Indonesian seas, the Government, through the Ministry of Marine Affairs and Fisheries issued a Regulation of the Minister of Marine Affairs and Fisheries Number 35 of 2015 concerning Fisheries Human Rights Systems and Certification. This research further describes how the provisions of the fisheries' human rights certification and analyzes their impact on protecting human rights for fishing vessel crews in Indonesia. The author uses a normative juridical research method by examining library materials or other secondary materials. The data collection method used is a literature study. The tools used are documents in the form of primary, secondary, and non-legal legal materials. The data obtained were analyzed qualitatively and then presented descriptively. This study found that there are various forms of human rights violations against fishing boat crews. Ministry of Marine Affairs and Fisheries then enforces regulation to prevent human rights violations by business actors against fishing vessel crews. There are several weaknesses in regulations and implementations, namely weaknesses in wage system arrangements, limited regulatory targets, the involvement of workers and employers' representatives in the fisheries human rights team that is not clear, weaknesses of the coordinating system for fisheries human rights teams with supervisors employment, weaknesses of fisheries human rights assessment institutions, weaknesses of socialization for employers and workers. The author suggests that it is necessary to strengthen the coordination and cooperation system between ministries in implementing Fisheries Human Rights Regulations. It also needs to improve communication and dissemination of policies and regulations to stakeholders.

scholarly journals Financial Feasibility Analysis of Wooden Fishing Vessel in Panggungrejo Subdistrict, Pasuruan, East Java

2019 ◽  
Vol 006 (02) ◽  
pp. 149-157
Author(s):  
Sri Rejeki Wahyu Pribadi ◽  
◽  
Rizky Chandra Ariesta ◽  
Hutami Putri Puspitasari ◽  
◽  
...  
Keyword(s):  
Feasibility Analysis ◽  
Fishing Vessel ◽  
Eligibility Criteria ◽  
Fishing Boat ◽  
Fishing Vessels ◽  
Financial Feasibility

Fishermen in fishing to catch fish need tools to get fish. The tools used here are fishing vessels. livelihoods as fishermen are carried out from generation to generation, the demand for fishing boat production will increase. Pasuruan is one of the producing areas of wooden ships with good quality and able to compete, with this potential it is necessary to analyze the financial feasibility of wooden boatyards in Pasuruan which will produce NPV, IRR, BC ration and timber boat dock payback periods in Pasuruan in a row amounted to IDR 505,472,000, 59%, 3.46 and 1.89 per year. The results obtained over the eligibility criteria of the financial value of NPV >1 and BC ratio > 1, so the wooden boatyard business in Pasuruan fulfills the feasibility value index to continue and development.

scholarly journals PERHITUNGAN GT KAPAL IKAN BERDASARKAN PERATURAN DI INDONESIA DAN PEMODELAN KAPAL DENGAN DIBANTU KOMPUTER (STUDI KASUS KAPAL IKAN MUNCAR DAN PRIGI)

2019 ◽  
Vol 10 (2) ◽  
pp. 141-152
Author(s):  
Sunardi Sunardi ◽  
Achmad Baidowi ◽  
Eko Sulkhani Yulianto
Keyword(s):  
Numerical Computation ◽  
Resource Utilization ◽  
Calculation Method ◽  
Objective Measurement ◽  
Operational Cost ◽  
Fishing Vessel ◽  
Fishing Boat ◽  
Fishing Vessels ◽  
Significant Difference ◽  
Calculation Process

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

scholarly journals Design of a Secondary Freeform Lens of UV LED Mosquito-Trapping Lamp for Enhancing Trapping Efficiency

Crystals ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 335 ◽  
Author(s):  
Wei-Hsiung Tseng ◽  
Diana Juan ◽  
Wei-Cheng Hsiao ◽  
Cheng-Han Chan ◽  
Hsin-Yi Ma ◽  
...  
Keyword(s):  
Light Intensity ◽  
Intensity Distribution ◽  
Light Emitting Diode ◽  
Trapping Efficiency ◽  
Axially Symmetric ◽  
Light Intensity Distribution ◽  
Light Emitting ◽  
Led Light ◽  
Uv Led ◽  
Freeform Lens

In this study, our proposed ultraviolet light-emitting diode (UV LED) mosquito-trapping lamp is designed to control diseases brought by insects such as mosquitoes. In order to enable the device to efficiently catch mosquitoes in a wider area, a secondary freeform lens (SFL) is designed for UV LED. The lens is mounted on a 3 W UV LED light bar as a mosquito-trapping lamp of the new UV LED light bar module to achieve axially symmetric light intensity distribution. The special SFL is used to enhance the trapping capabilities of the mosquito-trapping lamp. The results show that when the secondary freeform surface lens is applied to the experimental outdoor UV LED mosquito-trapping lamp, the trapping range can be expanded to 100π·m2 and the captured mosquitoes increased by about 300%.

scholarly journals Fisheries: A Missing Link in Greenhouse Gas Emission Policies in South Korea

2021 ◽  
Vol 13 (11) ◽  
pp. 5858
Author(s):  
Kyumin Kim ◽  
Do-Hoon Kim ◽  
Yeonghye Kim
Keyword(s):  
Greenhouse Gas ◽  
Greenhouse Gas Emission ◽  
Ghg Emissions ◽  
Bioeconomic Model ◽  
Negative Externalities ◽  
Fishing Vessel ◽  
Gas Emission ◽  
Fishing Vessels ◽  
The Government ◽  
Different Levels

Recent studies demonstrate that fisheries are massive contributors to global greenhouse gas (GHG) emissions. The average Korean fishing vessel is old, fuel-inefficient, and creates a large volume of emissions. Yet, there is little research on how to address the GHG emissions in Korean fisheries. This study estimated the change in GHG emissions and emission costs at different levels of fishing operations using a steady-state bioeconomic model based on the case of the Anchovy Tow Net Fishery (ATNF) and the Large Purse Seine Fishery (LPSF). We conclude that reducing the fishing efforts of the ATNF and LPSF by 37% and 8% respectively would not only eliminate negative externalities on the anchovy and mackerel stock respectively, but also mitigate emissions and emission costs in the fishing industry. To limit emissions, we propose that the Korean government reduce fishing efforts through a vessel-buyback program and set an annual catch limit. Alternatively, the government should provide loans for modernizing old fishing vessels or a subsidy for installing emission abatement equipment to reduce the excessive emissions from Korean fisheries.

scholarly journals Analysis on High-Power Seaport LED Luminaire with Uniform Light Distribution Based on Optimized Lens and Heatsink

2021 ◽  
Vol 11 (9) ◽  
pp. 4035
Author(s):  
Jinsheon Kim ◽  
Jeungmo Kang ◽  
Woojin Jang
Keyword(s):  
Light Source ◽  
High Power ◽  
Heat Dissipation ◽  
Light Emitting Diode ◽  
Light Distribution ◽  
Light Sources ◽  
Led Light ◽  
High Power Led ◽  
Distribution Requirement ◽  
Lighting Application

In the case of light-emitting diode (LED) seaport luminaires, they should be designed in consideration of glare, average illuminance, and overall uniformity. Although it is possible to implement light distribution through auxiliary devices such as reflectors, it means increasing the weight and size of the luminaire, which reduces the feasibility. Considering the special environment of seaport luminaires, which are installed at a height of 30 m or more, it is necessary to reduce the weight of the device, facilitate replacement, and secure a light source with a long life. In this paper, an optimized lens design was investigated to provide uniform light distribution to meet the requirement in the seaport lighting application. Four types of lens were designed and fabricated to verify the uniform light distribution requirement for the seaport lighting application. Using numerical analysis, we optimized the lens that provides the required minimum overall uniformity for the seaport lighting application. A theoretical analysis for the heatsink structure and shape were conducted to reduce the heat from the high-power LED light sources up to 250 W. As a result of these analyses on the heat dissipation characteristics of the high-power LED light source used in the LED seaport luminaire, the heatsink with hexagonal-shape fins shows the best heat dissipation effect. Finally, a prototype LED seaport luminaire with an optimized lens and heat sink was fabricated and tested in a real seaport environment. The light distribution characteristics of this prototype LED seaport luminaire were compared with a commercial high-pressure sodium luminaire and metal halide luminaire.

scholarly journals PERBANDINGAN KAPAL MONOHULL, CATAMARAN, TRIMARAN BERDASARKAN TINJAUAN OPERASIONAL PENGGUNAAN BAHAN BAKAR

2021 ◽  
Vol 4 ◽  
pp. 30-36
Author(s):  
Jacobus Tupan ◽  
Richard Benny Luhulima
Keyword(s):  
Data Analysis ◽  
Energy Requirements ◽  
Energy Usage ◽  
Fishing Vessel ◽  
Fishing Vessels ◽  
Initial Stage ◽  
Transverse Stability ◽  
Fishing Fleets

In general, fishing fleets operating in Maluku waters and managed by local entrepreneurs consist of monohull and trimaran fishing vessels with outriggers. Monohull fishing vessels have limited deck space and poor transverse stability, while trimaran-type vessels have better deck space and transverse stability than monohull vessels, but because they are still in the form of outriggers, the space is limited. This study aims to examine the development of the trimaran fishing vessel in terms of energy requirements, safety, and comfort of the crew during fishing operations. The initial stage of this research begins with data analysis and the basic size of monohull fishing vessels operating in Maluku waters, from this data the shape of the trimaran hull is designed. Calculation of resistance using CFD, then analyzed the calculation of resistance and stability, safety, and comfort of the ship using Maxsurf. The drag Trimaran is 8.86% smaller than a monohull and 3.25% smaller than a catamaran. Energy Usage (EHP) is proven by trimaran ships more than other ship modes. The average trimaran period is 10.5 seconds which meets IMO standards and is declared operationally good.

scholarly journals ANALISA TITIK KRITIS GERAKAN ROLL KAPAL TRIMARAN UNTUK DIAPLIKASI PADA KAPAL IKAN PURSE SEINE

2021 ◽  
Vol 4 ◽  
pp. 44-50
Author(s):  
Fella Gaspersz ◽  
Richard B. Luhulima
Keyword(s):  
Critical Point ◽  
Wave Height ◽  
Inclination Angle ◽  
Weather Conditions ◽  
Extreme Weather ◽  
Roll Motion ◽  
Fishing Vessel ◽  
Fishing Vessels ◽  
Wave Heights ◽  
Wave Angle

The marine fisheries catching and processing industry are considered vulnerable to the effects of extreme weather at sea. Global warming effects and El Nino and La Nina have a significant impact on the upwelling process, which impacts the lifestyle and environment of marine biota, including pelagic fish, which is one of the most important contributors to the shipping industry. Extreme weather conditions, with wave heights ranging from 1 to 5 meters, dominate the waters of Maluku. In extreme sea conditions, most fishers choose not to go fishing, not because there are no fish at the fishing grounds, but to avoid mishaps at sea. This research aimed to analyze the critical point of ship roll motion and ship stability. The hull shape employed in this study was a monohull fishing vessel and a trimaran fishing vessel with the same displacement of 21,1 tons. In extreme weather conditions, the Maxsurf software was used to analyze the ship's response, especially the critical point of the ship's roll motion. The I.M.O. Standard was utilized to calculate the ship's stability. The operational speed of the ship was v = 3 knots, with fluctuations in wave angle of incidence between 00 - 1800. Wave heights of 1,0; 2,0; 3,0, and 0,4 meters represent extreme weather conditions in Maluku waters' fishing grounds. The findings revealed that the trimaran hull type had better stability where the inclination angle of trimaran vessel stability was 480 while the monohull was 410. The trimaran fishing vessel was able to withstand a wave height of 3 meters with an inclination angle of 32,560. In comparison, the monohull fishing vessel was able to survive at a wave height of 2 meters with an inclination angle of 24,690. Monohull fishing vessel had a maximum limit of roll motion at wave directions 82 and 99 with a wave height of 3 m, and it reached at the critical point at angles of 43 and 138, at the height of 4 m. Meanwhile, the trimaran fishing vessel had a critical point at a wave angle of 760 and 1000 with a wave height of 4 meters. In the area between those two angles, monohull and trimaran fishing vessels will lose the balance (stability) of the roll motion, resulting in capsize.

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