Abstract: A simple math model was used to estimate the energy requirements of a water vortex generator, followed by another model constructed for fluid mechanical analyses of water surface resistance and friction of a modified buoyancy engine. The final results demonstrated the feasibility of converting the potential energy of buoyancy into kinetic energy using floatation of conveyer mounted airtight containers, through which ultimately free energy can be acquired. Physical reasons were provided for the power saving in the high volume air transport using convergent air/water vortex generators, for which applicable designs were disclosed. Several criteria were identified for the optimum design of air bubble/stream release. To reduce water resistance and friction the generic buoyancy engine was modified by installing flow smoothing skirt panels on the containers to provide smooth continuous surfaces.