Cad Geometric Modelling Software: Useful Tools for Hull Development and Naval Architecture Calculations of Albanian Marine Vehicles

Blenard Xhaferaj
Faculty of Technical and Natural Sciences University of Vlora “Ismail Qemali” - Albania

Abstract

Ships are complex structures that are designed of various shapes and sizes. The development of an accurate model of the hull form of the ship is crucial for the development process of the ship product. The hull form has a significant impact on project evaluations, performance analyses, and ship building process. Traditionally, naval architects use the so-called lines plan to represent the hull form of a ship. They use different manual techniques and methodologies to develop this plan. Based on the developed hull form, naval architects perform necessary calculations and verifications, such as hydrostatic, stability, and hydrodynamic calculations. However, traditional manual methods are tedious, time-consuming, and prone to errors. Nowadays, geometric modelling and CAD software are modern tools that can help to perform accurate calculations by minimizing the time needed for calculations. These tools are also useful in exploring different design alternatives and choosing the best option. Combining geometric modelling with CAD software plays a significant role in optimizing ship hull performances. Albania is a small country, with a modest development of the maritime Industry, where design and construction of ships rely mainly on traditional methods and practical experiences. This paper aims to demonstrate that these tools can help assess the navigational performance of the hull of ships quickly and accurately, and in overall can help Albanian engineers or companies to improve the quality of the ship design product. The methodology of using these tools is illustrated through a case study of evaluating hydrostatic parameters and resistance of a small Albanian maritime vessel by using the well-known Maxsurf computer packages.

Presentation