Analysis Of Seakeeping Index Under The Environment Of South China Sea

In the past,the influence of the external environment on the ship was sometimes ignored or omitted when designing or discussing the characteristics of it,especially in the marine environment.Marine environment has a great impact on the actual navigation of the ship,whether it is windy,wavey,currents,tides and so on,will affect or limit the performance and ability of the ship.Now marine environment for the effect of the ship,especially seakeeping effect has been attracting more and more attention of experts and scholars,seakeeping performance has become a measure of an important indicator of a ship,good seakeeping performance not only to ensure the safe operation of the ship,but can also bring enormous economic benefits.In today's information age which can be said is the digital one,the importance of data has been self-evident,and all kinds of special professional database for scientific research,enterprise development and people's life has a great influence and plays an important role.And for the actual ship sail,the sailing waters of marine environmental data were collected after the establishment of the marine environment database,and to discuss the data which is the collected data of the sea area to ship performance especially for ship seakeeping performance has become an important means to research ship seakeeping performance.This paper introduces the simulation principle of pre-phase seakeeping,and the principle of simulation software used arc analyzed and introduced in detail,then introduces the basic situation of the marine environment database,analyzes the principle of database used in this study,and puts forward the overall structure of the database.It uses Qt connection Oracle database with the database application of interface design,making the database with data query function,data update function,visual function and gives a brief introduction of the database connection.After,this paper uses Maxsurf software seakeeping module seakeeper for simulation research ofthe ship's seakeeping and calculating the factors influencing the seakeeping performance of ship model and the ship's seakeeping index were analyzed.The results show that the software gained sway value trend accurately,calculated the value with its credibility.The seakeeping single index obtained in the waters of the data collected by the ship should not be under the sea more than 9 above the level of the Windscale or 9s wave period or more than 5 meters of wave period with the corresponding navigation as far as possible.Finally,by using the navigation environment of the ship model,the results are visualized by programming connection,which makes the navigation range of the ship in different time periods in the selected area is clearly visible.