The Research On Stability Calculation About The Container Ship Stowage

Container is modern transportation way which appeared in fifty's years, and it is inexorable trend of development and develops quickly. With the development of trade and the improvement of the containerization of a piece of groceries and some bulk cargo, the situation of lasting growth has appeared all the time in the quantity of goods transportation of the container. Stowage is one of key courses in the operation of cargo transportation at sea. To work out the stowage plan for container ships, especially for large container ships is a very complicated kind of work.It requires much data processing, high precision of calculation, much concerning of restrictions and high efficiency.This thesis discusses the stability for container ships stowage and design of loading software for container ships.The status quo of transportation of container ships and the loading software for container ships is narrated in the first chapter. Some principles of working out stowage plan for container ships are summed up in the second chapter. In the third chapter, the thought of how to design a loading software is outlined. In the fourth chapter, the method of dealing with the ship's data concerning loading software is introduced, in the fifth chapter, the language of program and dasebase technology is discussed. in the sixth chapter, the help of using the software is demonstrated. And in seventh chapter, the author comes up with the prospect and the development about stowage in the future.The core of software design is the performance calculation and intact stability of the container ship which involves the ship type , the choices of the loading state and navigating area in the process. Performance calculation is mainly made up of the calculation of hydrostatical properties of ship and intact stability. Static stability , dynamic stability and stability characters are involved in intact stability.The choice of parameters has large effect on the calculation results, and linear and non-linear calculation of interpolation are used widely in the parameters design, which needs the author to have well-knit professionalknowledge even more.The author should be familiar with every part of loading in the software design, and should understand the container ship very much.Developing software of the stowage is very difficult because of many factors which are related with each other.Considering software characteristic and friendly interface of human-computer interaction, the author adopts Visual Basic6.0 as the language of the program, MS-Access as the main database and ADO (ActiveX Data Object ) as the database technology.Microsoft software (such as Excel ) is adopted flexibly. In the design, the author has developed some sub programs with different questions, thus maintainability of the program is perfect.