A mounting system is disclosed for mounting structures and equipment, such as wind-electric generators on water. The structure is attached to a carrier, which is attached to a foundation through connecting elements. Buoyancy tanks or the inherent buoyancy of the carrier or the connecting elements are used to maintain a stable position of the carrier in the water. Utilizing connecting elements that transfer pushing and pulling forces, undesirable movements of the carrier are suppressed while requiring only moderate forces on the foundation.