In the paper, a new numerical and experimental methodology proposed to study the ship hull torsion is treated. The code TORS, made in accordance with the methodology was tested on the ship hull model made of composite materials. The results are compared with the FEM based licensed soft COSMOS/M and measurements on the scale model (1:50) of a container ship, made of composite materials. (C) 2010 Elsevier BM. All rights reserved.