Capturing fluid loading on a fixed jacket structure.

I am very new to solidworks and have recently modelled a jacket structure and was wondering how i can represent the hydrostatic and hydrodynamic forces in solidworks. For hydrostatic pressure i believe rho*g*h should suffice and Morison's equation should take care of the hydrodynamic part. Problem now is how do i began the input? And how do solidworks deal with local forces transforming into a global force? Thank you very much.

SolidworksSimulation