Numerical Analysis of an Offshore Pratol Vessel to Work in the GoM Using the Finite Element Method

At new ship's design stages, an important requirement is to grant the structure safety during ship's operation. In this scenario, it is relevant to make a dynamic analysis to identify possible resonance conditions between the structure and the main excitation sources. This work is evaluating the dynamic analysis and the structural strength according to the recommendations from the classification society DNV GL for the Oceanic Patrol type OPV. The calculation of the RAO's was developed using the Motion Maxsurf software to evaluate it. The structure of a ship is analysed with different loading conditions. The vessel is considered as a beam, supported, on a wave of length equal to the length of the vessel whose ridge is in the hull girder, or on the same wave, but with the breast in the mainframe and it is crests forward and Stern. The structural strength of the main frame of a vessel by the Finite Element Method using the GeniE DNV GL software. The results are in good agreement for this patrol to navigate on the Gulf of Mexico.