The pressure field and surface wave pattern generated by a submerged sphere advancing at constant speed in calm water have been calculated by two different methods. The first method uses the Navier-Stokes equations coupled with the Volume of Fluid method to treat the free surface. The second method uses a potential flow model with a linearized free surface condition. Good agreement is found for the calculated wave pattern close to the sphere, but the results diverges further away. Due to large fluctuations from the turbulent flow field in the calculated pressure using the viscous solver, a comparison for the calculated pressure is difficult to make.