A system for generating energy from tuning masses relative to a ground plane using the hydraulic force of the waves in a body of water, the system with a power density comprising: a first mass, the first mass including a floating platform with a hull (28, 202), a leading edge and a trailing edge floating on the body of water on which the water in the waves exerts hydraulic forces on the floating platform, the first mass movable relative to the ground plane, wherein the hydraulic force of the waves induces an oscillation in the first mass relative to the ground plane; a second movable mass carried pivotally by and movable relative to the first movable mass; the second movable mass creating kinetic energy as the result of varying the position of the second movable mass relative to the first mass, wherein the second movable mass and the first movable mass have a weight and by increasing the displacement of the first mass, without increasing the surface area of the first mass, increasing the weight of the second movable mass increases the power density and energy of the system; a mechanism (192, 198) to convert the kinetic energy of the second movable mass moving relative to the first mass into another form of energy; a mechanism for tuning the first mass relative to the hydraulic force to increase energy generated; a mechanism for tuning the second mass relative to the first mass to increase energy generated which includes a mechanism for adjusting the path of the second movable mass relative to the first movable mass, the mechanism for adjusting the path including the second mass pivoting relative to the first mass about a pivot point and a mechanism for adjusting the position of the second mass relative to the pivot point. a first mass, the first mass including a floating platform with a hull (28, 202), a leading edge and a trailing edge floating on the body of water on which the water in the waves exerts hydraulic forces on the floating platform, the first mass movable relative to the ground plane, wherein the hydraulic force of the waves induces an oscillation in the first mass relative to the ground plane; a second movable mass carried pivotally by and movable relative to the first movable mass; the second movable mass creating kinetic energy as the result of varying the position of the second movable mass relative to the first mass, wherein the second movable mass and the first movable mass have a weight and by increasing the displacement of the first mass, without increasing the surface area of the first mass, increasing the weight of the second movable mass increases the power density and energy of the system; a mechanism (192, 198) to convert the kinetic energy of the second movable mass moving relative to the first mass into another form of energy; a mechanism for tuning the first mass relative to the hydraulic force to increase energy generated; a mechanism for tuning the second mass relative to the first mass to increase energy generated which includes a mechanism for adjusting the path of the second movable mass relative to the first movable mass, the mechanism for adjusting the path including the second mass pivoting relative to the first mass about a pivot point and a mechanism for adjusting the position of the second mass relative to the pivot point.