MARINE FISHERIES AND SAFETY

Fisheries ◽  
2020 ◽  
Vol 2020 (6) ◽  
pp. 111-113
Author(s):  
Viktor Min'ko
Keyword(s):  
Statistical Data ◽  
Marine Fisheries ◽  
Fishing Vessel ◽  
Fatal Accidents ◽  
Small Vessels ◽  
Fishing Vessels ◽  
Fishing Gears

The problem of choosing a fishing vessel is considered. Statistical data from various countries are presented, confirming the increased level of professional risk for members of the crews of small vessels. A relation that relates the frequency of fatal accidents among fishermen with the displacement of fishing vessels is obtained. The necessity of increasing the level of safety of the solutions used in the design of fishing schemes, fishing equipment and fishing gears is indicated.

Roll Stabilization for Small Fishing Vessels Using Paravanes and Anti-Roll Tanks

1998 ◽  
Vol 35 (02) ◽  
pp. 74-84
Author(s):  
D.W. Bass
Keyword(s):  
Full Scale ◽  
Fishing Vessel ◽  
Small Vessels ◽  
The Third ◽  
Fishing Vessels ◽  
Roll Stabilization ◽  
Full Scale Tests ◽  
Design And Testing ◽  
Constant Source ◽  
Passive Stabilization

Excessive roll is a constant source of discomfort and danger for small fishing vessels. The paper describes two methods of reducing roll: paravane stabilizers and passive stabilization tanks. In particular an analysis is presented of the possible hazards of paravane use in severe seas, based on the capsize of a small fishing vessel after the loss of one paravane. Anti-roll tanks, as an alternative to paravanes for some small vessels, have been proposed and successfully tested on three boats. The design and testing at model and full scale of such a system is described. Full scale tests were carried out on three sister vessels, two with tank systems and the third with paravanes.

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.

Risk Assessment of Small Fishing Vessel Trap Net Operations

1995 ◽  
Vol 32 (03) ◽  
pp. 231-243
Author(s):  
Todd Schauer ◽  
Barry Romberg ◽  
Changben Jiang ◽  
Armin W. Troesch
Keyword(s):  
Native American ◽  
Nonlinear Dynamic System ◽  
Line Tension ◽  
Operating Conditions ◽  
Fishing Vessel ◽  
Moment Curve ◽  
Upper Great Lakes ◽  
Small Vessels ◽  
Increased Risk ◽  
Nonlinear Rolling

This paper describes a means by which the capsize risk associated with various fishing vessel operating conditions can be evaluated. Rather than relying on the static restoring moment curve as the primary criteria for vessel safety, modern nonlinear systems analysis is applied to the problem of extreme nonlinear rolling in random beam sea. While the method is quite general and not limited to small vessels, it is illustrated with a specific application involving Native American trap net fishing on the upper Great Lakes. General trap net operations, as practiced by Native American fishermen and women in the Grand Traverse Bay region, are presented in detail. The most significant characteristic of trap net operations is the heel induced during net deployment and net lifting. The increased risk to the vessel, in terms of the increased probability of capsize is quantified for various heel angles and various sea states. A significant advantage of the capsize analysis method presented here is its ability to investigate quickly the effects of many parameters (e.g., trap net line tension, wave height, and/or wave period) on a nonlinear dynamic system without having to resort to extensive simulation studies.

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.

scholarly journals Level of Compliance of Traditional Fishing Vessels to Fisheries Department Regulations in Pangkor Island

2019 ◽  
Vol 9 (2) ◽  
pp. 4585-4589
Keyword(s):  
Content Analysis ◽  
Qualitative Content Analysis ◽  
Likert Scale ◽  
Fishing Vessel ◽  
Statistical Tools ◽  
Fishing Vessels ◽  
Traditional Fishing ◽  
Frequent Reason

This study aims to determine the level of compliance of fishing vessels operations to Malaysian Fisheries Department rules and regulations as well as to identify the reasons of non-compliance among fishermen in Pangkor Island, Perak. The data was collected through the distribution of questionnaire and analysed using descriptive statistical tools. The level of compliance of fishing vessel operations was determined by a five point Likert scale, whilst qualitative statements were grouped into several topics using qualitative content analysis. The reasons for the fishermen’s non-compliance were also identified by using closed-ended and open-ended questions. The outcome of this study can be categorised into several levels of compliance. As for the reasons for non-compliance, the most frequent reason chosen by respondents was lack of trust towards the authorities.

scholarly journals FISHING-VESSEL DETECTION USING SYNTHETIC APERTURE RADAR (SAR) SENTINEL-1 (CASE STUDY: JAVA SEA)

2020 ◽  
Vol 16 (2) ◽  
pp. 131
Author(s):  
Sarah Putri Fitriani ◽  
Jonson Lumban Gaol ◽  
Dony Kushardono
Keyword(s):  
Synthetic Aperture Radar ◽  
Object Identification ◽  
Synthetic Aperture ◽  
Overlay Analysis ◽  
Constant False Alarm Rate ◽  
Fishing Vessel ◽  
Fishing Vessels ◽  
Sensing Technology ◽  
Vessel Detection ◽  
Aperture Radar

The synthetic aperture radar (SAR) instrument of Sentinel-1 is a remote sensing technology being developed to enable the detection of vessel distribution. The purpose of this research is to study fishing-vessel detection using SAR Sentinel-1 data. In this study, the constant false alarm rate method (CFAR) for Sentinel-1 data is used for the detection of fishing vessels in Indramayu sea waters. The data used to detect ships includes SAR Sentinel-1A images and vessel monitoring system (VMS) data acquired on 8 March and 20 March 2018. SAR Sentinel-1 imagery data is obtained through pre-processing and object identification using Sentinel Application Platform (SNAP) software. Overlay analysis is then used to enable discrimination of immovable and movable objects and validation of ships detected from SAR Sentinel-1 imagery is performed using VMS data. From overlay analysis, 46 ships were detected on 8 March 2018 and 39 ships on 20 March 2018. Of all the ship points detected using SAR Sentinel-1, 7.06% could be detected by VMS data while 92.94% could not. The number of ships detected by SAR Sentinel-1 is greater than those detected by VMS because not all ships use VMS devices. 

A Fishing Vessel Energy Analysis Program

1989 ◽  
Vol 26 (01) ◽  
pp. 62-73
Author(s):  
Sander M. Calisal ◽  
Dan McGreer ◽  
Gerry F. Rohling
Keyword(s):  
Fuel Consumption ◽  
Return On Investment ◽  
Energy Analysis ◽  
Fuel Saving ◽  
Analysis Program ◽  
Fishing Vessel ◽  
Small Vessels ◽  
University Of British Columbia ◽  
Propeller Design ◽  
The University

A microcomputer-based program has been developed at the University of British Columbia to help fisherman and naval architects estimate fishing vessel fuel consumption. The program allows users to calculate the fuel consumption for a given fishing trip scenario. The program can then be used to calculate the return on investment of fuel saving improvements made to the vessel such as: Kort nozzle, two speed gearbox, variable-pitch propeller, and new propeller design. The program can be used for the design of small vessels such as tugs and supply vessels.

A Seakeeping Study of the UBC Series

1997 ◽  
Vol 34 (01) ◽  
pp. 10-23
Author(s):  
Sander M. Calisal ◽  
David Howard ◽  
Jon Mikkelsen
Keyword(s):  
British Columbia ◽  
Measurement Procedure ◽  
Collection System ◽  
Fishing Vessel ◽  
The West ◽  
Hull Form ◽  
University Of British Columbia ◽  
Fishing Vessels ◽  
Seakeeping Performance ◽  
The University

The University of British Columbia (UBC) and the British Columbia Research Incorporated (BCRI) collaborated to design a fishing vessel suitable for use on the west coast of Canada. This vessel, called the UBC Series parent hull form, was designed to have a large aft deck area and a volumetric coefficient comparable to those of modern Canadian fishing vessels. The resistance characteristics of this hull were improved without compromising on functionality and usable space. A resistance algorithm developed from the results for a systematic series of low-L/B displacement-type vessels, the UBC Series, was previously published (Calisal&McGreer, 1993). However, during the design process, the seakeeping performance of the vessel was never addressed. This paper describes the seakeeping performance of the UBC series in head seas. An algorithm, developed from the results of the model tests, can be used to calculate the seakeeping response of similar low L/B vessels. To calibrate the seakeeping measurement procedure, tank instrumentation, and data collection system, the ITTC Standard Seakeeping hull form (the S-175 hull form) was tested and the results were compared against published results for this hull form. The same techniques used for the standard hull form were then used to measure the seakeeping performance of the UBC Series. Possible application of the algorithm for non-UBC Series forms is also discussed.

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