Net winch design in trawlers, influence of vessel size and fishing ground

Carral, Luis; Tarrío-Saavedra, Javier; Formoso, Jose Angel Fraguela

doi:10.1177/1475090217718923

Cited by 2 publications

(4 citation statements)

References 20 publications

(30 reference statements)

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“…The transfer functions were calculated and analyzed using statistical correlation studies and multivariate linear regression techniques [22]. This methodology has recently been applied to various different engineering domains, including naval and oceanic engineering [23][24][25]. In the case of ocean engineering, following a similar methodology, Carral-Couce et al [23] developed nonlinear and multivariate linear regression models to estimate the traction of towing and anchor-handling winches.…”

Section: Statistical Response Variables and Predictorsmentioning

confidence: 99%

“…In the case of ocean engineering, following a similar methodology, Carral-Couce et al [23] developed nonlinear and multivariate linear regression models to estimate the traction of towing and anchor-handling winches. Additionally, the transit time to cross the Panama Canal's new locks was estimated using multivariate linear regression [24], and the effect of vessel dimensions, type, and fishing ground were also modeled to estimate net drum and winch traction for trawler design tasks [25]. These techniques were also used to forecast wave height [26] and vessel traffic flow [27], among various other applications.…”

Section: Statistical Response Variables and Predictorsmentioning

confidence: 99%

“…The predictors of a multivariate linear model should be uncorrelated in order to obtain reliable model parameter estimations, and, hence, accurate and precise predictions [23][24][25]28]. Indeed, the existence of multicollinearity leads to estimates of model parameters being highly dependent on sample data, preventing an analysis of the effect of each predictor or covariate on the response, and limiting the model's ability to generate accurate predictions.…”

Section: Correlation Analysismentioning

confidence: 99%

See 2 more Smart Citations

Application of an Analytic Methodology to Estimate the Movements of Moored Vessels Based on Forecast Data

Sande

Figuero

Tarrío-Saavedra

et al. 2019

Water

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A port’s operating capacity and the economic performance of its concessions are intimately related to the quality of its operational conditions. This paper presents an analytical methodology for estimating the movements of a moored vessel based on field measurements and forecast data, specifically including ship dimensions and meteorological and maritime conditions. The methodology was tested and validated in the Outer Port of Punta Langosteira, A Coruña, Spain. It was determined that the significant wave height outside the port, and the ratio of the vessel’s length divided by its beam (L/B), are the variables that most influence movements. Furthermore, heave and surge are the movements with a better value of the coefficient of determination (R2 values of 0.71 and 0.67, respectively), the sway (R2 = 0.30) and roll (R2 = 0.27) being the worst when using the available forecast variables of the Outer Port of Punta Langosteira. Despite their low R2 values, sway and roll models are able to estimate the main trends of these movements. The obtained estimators provide good predictions with assumable error values (root mean square error—RMSE and mean absolute error—MAE), showing their potential application as a predictive tool. Finally, as a consequence, the A Coruña Port Authority has included the results of the methodology in its port management system allowing them to predict moored vessel behavior in the port.

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Section: Statistical Response Variables and Predictorsmentioning

confidence: 99%

Section: Statistical Response Variables and Predictorsmentioning

confidence: 99%

Section: Correlation Analysismentioning

confidence: 99%

See 1 more Smart Citation

Application of an Analytic Methodology to Estimate the Movements of Moored Vessels Based on Forecast Data

Sande

Figuero

Tarrío-Saavedra

et al. 2019

Water

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“…In view of the uneven tension of trawl fishing, foreign scholars and experts designed trawlers from the overall design and designed a matching tension control system for the stranding machine, and the study showed that the tension adjustment played an effective role in the shape of trawl net mouth [4] .Scholars and universities in China have made good research results on the overall structure of trawlers and hydraulic system control system [5,6] . Research in tension control is generally based on PID fuzzy control [7,8] .…”

Section: Introductionmentioning

confidence: 99%

Design and Simulation of Hydraulic Winch Tension Control for Trawler

Zhang

Xie

et al. 2023

AMM

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The trawler winch is a main winching tool in the fishing operation of trawler. The disturbing influence of various factors such as sea wind and waves, change in the size of the catch and the turning of the fishing vessel during the operation of the trawler will cause unbalanced force on the wire rope of the two winches, which will easily cause the deformation and damage of the fishing net facilities and directly affect the improvement of the fishing yield and increase the harvest. In order to compensate for the change of the tension of the winch tractor during the operation of the trawler, the change of the load tension caused by the wave, or the rotation direction of the fishing vessel, and to ensure the good shape of the net opening, an electro-hydraulic control technology was used to design an automatic trawler tension controller. The tension control method of the trawler is investigated. The tension sensor is used as the input information of the electrical signal of the trawler's left and right trawler, which is measured indirectly and transmitted to the controller for logical operation, and the output torque of the hydraulic motor is changed by controlling the pilot overflow, which drives the trawler winch to adjust the tension of the left and right trawler to achieve the dynamic balance of the control system. In order to solve the problem of the tension of the trawl and the influence of the length change on the trawl, we designed an intelligent control system combining PLC control system and hydraulic system and used AMEsim hydraulic simulation software system to model and simulate it, the results show that without PLC control the torque of hydraulic motor 1 is 2387.7NM, the torque of hydraulic motor 9 is 2148.64NM the difference is 239.06 NM uneven force on both sides of the trailing platform, after adding PLC adjustment torque is obviously controlled torque to maintain about 2300NM, within a certain range to play a reliable adjustment effect.

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Net winch design in trawlers, influence of vessel size and fishing ground

Cited by 2 publications

References 20 publications

Application of an Analytic Methodology to Estimate the Movements of Moored Vessels Based on Forecast Data

Application of an Analytic Methodology to Estimate the Movements of Moored Vessels Based on Forecast Data

Design and Simulation of Hydraulic Winch Tension Control for Trawler

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