Abstract
Possibilities in anticipation of functional performance of the ships in real sea navigation conditions, since the early stages of design, is a challenge for naval architects, motivated by the need to reduce design time and cost of construction. The paper presents a computer-assisted study of the characteristics that define the behaviour of the ship under real navigation conditions (RAO spectrum of the ship response to the action of the sea waves) depending on the ship static and dynamic characteristics. For the study was used the features offered by OCTOPUS software. Program library was used for both the vessel itself and navigation modelling environment, for regular waves as well for the irregular waves which was modelled using Jonswap energy spectrum.
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