Background: Due to the expansion of human societies and the increase in population, their need
for hydrocarbon resources as well has increased Since about 80% of hydrocarbon resources are at
depths higher than 820 meters and considering that marine structures in the field of oil and gas are
progressing, The use of new technologies is progressing. In the past years due to
Huge sources of energy in the seas and oceans require the construction of large floating and marine
structures It is expanding especially in deep waters. Exploration of oil and gas resources in the
waters The depth caused the construction of platforms suitable for these waters, one of which is
the Spar platform Is
Aim: The use of floating platforms in the deep waters of the oceans to harvest fossil fuels and
Extraction of new energies is increasing. These structures are used to harvest energy from sea
waves wind or extraction of fossil energy are used, this research has also tried is to study the linear
and angular movement of this type of spar platforms. from there that the sea wave is irregularly
shaped with frequency content, so these wave characteristics cause creation
The phenomenon is intensified. Now, in order to remove the dynamic system of the platforms from
the phenomenon, it is intensified They can be removed from these conditions by adding a sheet at
the bottom of the platform Creating damping in the intensified state and on the other hand reducing
the natural frequency of the structure by increasing the added mass took place
Methodology: In this research, using the articles in the reliable journals and previous related theses
With this thesis, the required information was collected and extracted, and then the methods were
examined It is done in different ways. Finally, using the outputs from the software and The
numerical simulation of the platform and its comparison with the laboratory results are carried out
during the thesis writing process to give Conclusions: 1) The use of a combin