In order to calculate the cross curve of stability related to ship form the water line
of equal volume corresponding to each load draught should be determined. Therefore
complex and long steps of mathematical calculations should be done for each ve
ssel
displacement.
The goal of this research is to build a mathematical model enables the determination
of cross curve of stability related to ship form for all ship displacements. This model is
based on reading of the transverse sections of the ship projected on to a vertical transverse
plane of the body plan.
This method does not need to previous assumptions to perform calculations therefore
the calculations accuracy could be increased in comparison with other methods currently in
use to evaluate the transvers stability for ships.
The efficiency of this method has been proven in saving time as well as in giving
good results by comparing it with the analytical results for ships of box and trigonometric
forms. The comparison includes Pozduinin approximate method which is largely used in
ship world as well as the stability curves for real commercial ship. The good results of
evaluation of cross curves of stability by the proposed method (scanning sections method)
allow to generalize its use for validation of ship stability and other works research.
