Application For Hull Lines Calculation

The main purpose of this thesis is to developing a hull lines transformation system which contain the database programming, hull lines transforming, hydraulic calculation, frame offsets calculation and graphic drawing. It based on VB6.0 platform, the method of this system is parent-ship transformation and cubic spline theory. According to the parent ship's offsets data, the ship's bow and stern outline data and any other data, the system can transform and get the offsets of the design ship. on the basis of offsets,it can have some calculation on related performance.The program is primarily using the parent-ship transformation,it needs the parent ship's data. For this question the program used the Access database to store the data of parent ship (including the offsets table, the bow and stern outline table and principal dimension of the parent ship).It is convenient for program to select and call.Through the writing and modification of the program, the system basically implements the transformation from the parent ship to a new ship, the calculation results exported outside the program. In this foundation for the design ship,the program can have hydraulic calculation and frame offsets calculation, and realize the drawing exporting of the hydraulic curve. The whole hull lines transformation system realized the function of data importing, storage, modification, selection calculation, exporting and so on.