Presently, PVElite cannot perform such an analysis. PVElite expects the accelarations to to translate the vessel in any of the three mutual axes (x,y & z). With rolling and yawing, there are rotational accelerations also, which are complex.

If you have a copy of the book 'Pressure Vessel Design Manual' 3rd Edition by Dennis Moss, there is an analysis procedure there in a section entitled 'Transportation and Erection of Pressure Vessels' which would be of much help.