NOVELTY - Using massive rolling steel balls through restrictive chambers actuated by the vertical pitching of an anchored vessel located in an area of heavy swells to produce renewable energy comprises developing electric power through reverse osmosis membranes to convert to fresh water.    USE - The methods are useful for using massive rolling steel balls through restrictive chambers; constructing a barge like vessel to be slightly less in length then the average wave length of inshore swells; mooring a vessel/barge in such a manner that the attachment point of the mooring line is under the vessel at a fulcrum point; aligning the vessel perpendicular to the incoming wave lines; automatically sinking the barge to a prescribed depth in the event of a severe storm; and for constructing each vessel with a beam of approximately 100 feet to accommodate 9 steel ball chambers 10 feet in diameter and constructed with stern more buoyant then the bow (all claimed). The methods can also be used for capturing renewable energy, using power from ocean waves approaching the continental shores of the world as they build to greater height and power impact with the shallower waters.    ADVANTAGE - The invention proposes a novel approach to harnessing the lost power to produce an endless supply of renewable energy.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are:    (1) an apparatus, which is designed as a moving car, enclosing heavy steel balls which car is moved backwards and forwards as waves pass under the vessel creating a rocking motion and in turn generating power through a rack and pinion gear train driving a generator;    (2) construction of a barge like vessel to be slightly less in length then the average wave length of inshore swells;    (3) a method of mooring a vessel/barge in such a manner that the attachment point of the mooring line is under the vessel at a fulcrum point thus reinforcing a maximum pitching motion;    (4) a method of aligning the vessel perpendicular to the incoming wave lines by the use of bow thrusters;    (5) a method of automatically sinking the barge to a prescribed depth in the event of a severe storm to minimize damage--involving the flooding of bilge tanks and utilizing a large buoy to regulate the depth of decent, thus this will be actuated when excessive power is being generated; and    (6) a method of constructing each vessel with a beam of approximately 100 feet to accommodate 9 steel ball chambers 10 feet in diameter and constructed with stern more buoyant then the bow to accommodate the loss of lift power as the wave passes under the heavy vessel.