Repower the engine wich MAXSURF

We're doing case studies where customers already have their semi-displacement hulls glide manufactured and wish to make a repower, thus all would alter the characteristics of stability and potency of the vessel, among other. I would be like if the MAXSURF need the mesh of the hull vessel for hydrostatic calculations, stability, speed and power, or only by the geometric parameters of the vessel: Length between Perpendiculars, Breadth, Displacement, Draft and we can get some results.