Principles of the tugboats’ surface systematization in the development of theoretical drawing by the interpolation method

The work is devoted to the issues of the tugboat’s surface development by the interpolation method at the early design stages. The developed theoretical drawing of the tugboat’s hull should correspond as much as possible to the specified parameters, namely, the calculated values of the overall completeness ratio and the relative abscissa of the magnitude center. The principles of the approach to existing ship hulls’ systematization are given and the possibility of their application for developing a theoretical surface with the specified parameters is evaluated. As a result of the analysis, systematization and selection of the most suitable hulls for processing were carried out. The variety of hull shapes has been successfully brought to a single system, which is necessary for interpolation, and consequently for creation of a new hull with the specified parameters. The adopted approach to the ship surface development can be used to automate the process of obtaining it.