Research On Optimal Design Of Steel Marine Fishing Vessels

In 2018,the total number of Chinese fishing boats has reached 946,200.A large number of fishing boats and growing fishing demand have seriously affected the sustainable development of marine fisheries.Therefore,the renovation of fishing vessels and the selection of fishing vessel types are necessary for the development of fishing vessels.The way through.Most of the selection of fishing vessel types is organized by relevant experts.On-site comprehensive evaluation and optimization of fishing vessels,lack of objective analysis and scientific basis for fishing vessels.Therefore,this paper selects the steel marine fishing vessel type selection system as the selection platform to screen out the conformity.Excellent fishing boat type "safe,environmentally friendly,economical,energy-saving,and livable" and recommended for fishing vessels.The selection results of the fishing vessel type with more valuable optimization are analyzed,and corresponding optimization suggestions are put forward.Firstly,the design and research contents of the steel marine fishing vessel type selection system are as follows: determine the construction principle of steel marine fishing vessel selection index,establish a steel marine fishing vessel selection index system;In this paper,the improved game comprehensive weight model is used to comprehensively weight the selected indicators,and the objective weight assignment method and the subjective weight assignment method are combined to provide a more scientific standard for further optimization and optimization of marine fishing vessels;The main problems existing at present are the specific analysis of the overall demand for the selection of marine fishing vessels,the establishment of three forms of classification,quantitative scoring and expert review.The core system is divided into the comprehensive information management system for fishing vessels and the information of fishing vessel type information.The collection system,the fishing vessel type expert review system and other sub-systems.Secondly,in this paper,the example application of steel marine fishing vessel type selection system is as follows: three 45 r,38.8m and 43 m squid fishing nets are selected for selection and application,and the steel marine fishing vessel selection system is selected to obtain 38.8m flow.The gillnet fishing boat is an excellent ship type,and the 43 m spur net fishing boat needs further optimization.The detailed analysis of the selection result of the 43 m squid fishing net is recommended.It is recommended that the 43 m spur net fishing boat optimizes the structure with the weight of the empty ship as the optimization target.Therefore,this paper optimizes the structure of the 43 m squid fishing boat by using the ant colony algorithm for the 43 m squid fishing net with the minimum mass per unit length.The optimized 43 m squid fishing boat data is substituted into the steel marine fishing vessel type selection system.After re-rating,the optimized virtual fishing boat score has been improved to a certain extent,reflecting the good sensitivity and accuracy of the steel marine fishing vessel type selection system.Finally,in this study,the steel marine fishing vessel type selection system is selected as the fishing vessel type selection platform.The selection of the fishing vessel type,combined with the optimization suggestions of the selection results,optimizes the design of the fishing boat,and uses the feedback mechanism to prove the effectiveness of the selection system.Scientifically,it highlights the high efficiency and convenience of the operation of the steel-type marine fishing vessel type selection system,and provides a scientific and convenient operation platform for the renovation and reconstruction of China's fishing vessels.