Analysis of the dimensions of the lightening holes in the deck beams of a hull

The proposed work describes a procedure for sizing primary structural elements in the initial phase of ship design, with the aim of determining the maximum dimensions of the lightening holes usually found in the webs of beams, which are also necessary for the passage of plant components. The objective is to simplify the process for a more effective and integrated result from the earliest stages of design. In particular, the dimensioning of a ship's hull, although a complex problem, is often governed by a few independent variables with often limited ranges of variation. The optimal choice is therefore obtained by systematically analyzing and comparing the solutions that are actually feasible in practice. The systematic analysis will provide designers with rational data for choosing the dimensions of the beams, with a view to finding the best solution in terms of weight-strength and maximum size of the lightening holes. The study combines analytical and numerical methods with design experience, integrating the results into the design process using a VBA code.