Ship lightweight Calculation

(In cargo ships preliminary design)

Introduction

The calculation of the ship lightweight and her center of gravity is one of the basic tasks to be performed in the ship initial design stage, where it is advisable to be able to perform quick, approximate calculations, allowing to quickly analyze many alternative dimensionings. In this blog I present a form to enter the main dimensions of a cargo ship from which the program computes, approximately, the ship lightweight and center of gravity height broken down in Steel, Equipment and Machinery. Results are limited to ships up to 320 m. length between perpendiculars and aspect ratios should be normal.

A  model of the frigate "Blas de Lezo"

by Juan Carlos Gorostiza

 In a former post on my blog "Oteando desde Getxo" (Scanning from Getxo), I presented some ship models manufactured by my friend Juan Carlos Gorostiza, which bind to the charm inherent to any ship model, the simplicity of the construction methods used by Juan Carlos, what makes doubly attractive the contemplation of his models with the awareness of his techniques. But note that simple methods do not mean this is an easy job, much less. In my opinion it is doubly worthy achieving so good results when the methods are so affordable.