Device for conversion of wave energy into electrical energy and the process for its deployment at the exploitation location, wherein the device comprises a supporting construction (50) composed of buoyancy elements (52) and having a supporting tube (51) attached on the upper side. The device comprises a joint gear (30) on the inner circumference connected with the outside surface of the supporting tube (51) in a sliding manner and a sphere (32) to which is the floating body (20) pivotally connected. The device has two gears, the first flexible gear (1) for connecting the floating body (20) to the second gear and the second gear for connecting the flexible gear (1) to the generator. The flexible gear (1) consists of pulleys (6a, 6b, 6c) and a flexible element, e.g. a rope or a steel cable and the second gear can be arranged in several suitable forms, e.g. rigid elements as a set of a gear (4) and a rack (2) positioned inside the lower supporting tube (53) or a flexible element, e.g. a chain (3) and a sprocket wheel (5) set in the buoyancy element (52). The supporting construction (50) is by ropes (63) connected to the anchor weight (67) that is made in a form of a sphere segment either directly or through the rolling elements placed in the spherical dent of the anchor base (61). The invention comprises the process for device deployment at the exploitation location which is particularly suitable due to stable transport with low draught.