NOVELTY - The power-take-off has a crankshaft like structure (30) mounted on a semicircular like structure (32) and rotating around main symmetry axes (z, 33) of the power-take-off via bearings (16, 17). The semicircular like structure is symmetric and includes a shaft (26) that is supported by the bearings. The shaft drives a rotor (20) of a rotary electrical generator (21) that is supported by the bearings, where rotation of the electrical generator is caused by the precession of a gyroscopic mass (5) e.g. wheel, that rapidly spins around a principal spin axis.    USE - Gyroscopic power-take-off (GPTO) for a submerged wave energy converter (claimed) for producing electricity from sea or ocean waves.    ADVANTAGE - The gyroscopic power-take-off (GPTO) can increase waves motion up to about one generator rotor turn per second, on average with high peak values and allows the force of the waves to be effectively conveyed through the gyroscope main shaft bearings. The gyroscope provides proportional and progressive floater motion during progressive damping of the generator, thus providing complete and progressive latching control over the floater. The increase or decrease in the progressive damping can be controlled by air-gap torque of the generator, and the instantaneous wave force can be accurately measured by the precession angular velocity driving the motion of the generator. The gyroscope utilized in the GPTO is ruled and described by the angular momentum conservation law and energy conservation Law which enables neglection of bearing, drag and vibration losses, thus providing a theoretical efficiency of 100 percentage to the GPTO. The load is divided on multiple bearings and the load input speed is small on the bearings which avoid the rise in temperature due to friction under heavy loads.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a submerged wave energy converter (WEC) comprising a cylindrical body.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of a floater of a wave energy converter at the equilibrium point with the variable angle set at ninety degree.    Main symmetry axes (z, 33)    Gyroscopic mass (5)    Bearings (16, 17)    Rotor (20)    Electrical generator (21)    Shaft (26)    Crankshaft like structure (30)    Semicircular like structure (32)