NOVELTY - The apparatus (10) has a buoyant vessel (12) floating on sea (2) and holding a body of water (14) normally remaining level under action of gravity. A member (16) e.g. a float, floats on the surface of the body of water and is connected to a hydraulic ram. The vessel is pitched or rolled about at least one horizontal axis to cause the relative movement of body of water to remain or quickly return to the level position. The relative movement causes the member to move, operating the hydraulic ram and generating energy as result.    USE - Apparatus for generating energy from waves on sea. Can also be used for generating electricity to be supplied to suitable grid or network by cables and electrical supply systems.    ADVANTAGE - Energy is generated from pitching and rolling motion of buoyant vessel in response to wave action, allowing apparatus to be operated independently or coupled to system for generating energy due to rise and fall of vessel, increasing energy recovered from wave motion. Seals are provided between edges of member e.g. float, and inner surface of vessel, reducing or preventing passage of liquid past member. Member can be freely rotated about one or more axes, yet prevented from being moved in vertical direction within vessel, as not to reduce energy generating efficiency. Intermittent fluid supply as result of irregular wave action can be used to provide constant supply of energy from system. Apparatus can be arranged as separate units or modules, with one or more buffers attached to one or both in each pair of modules to prevent damage arising from collisions or contact between adjacent modules. Buoyancy device counteracts any tendency of edge of vessel to sink under action of large or severe wave, reducing or eliminating possibility of vessel capsizing as buoyancy device provides vessel with self-righting capability. Apparatus does not require anchor, allowing apparatus to be deployed in wide range of locations, including deep water locations. Opposing upward and downward movements of adjoining buoyant bodies reduces overall stresses on supporting assembly.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) a method for the generation of energy from wave motion; and    (2) a system for the generation of energy from the motion of waves.    DESCRIPTION OF DRAWING(S) - The drawing shows the diagrammatical view of apparatuses for generating energy from waves responding to incident wave.    Sea (2)    Apparatus for generating energy from waves (10)    Buoyant vessel (12)    Body of water (14)    Member (16)