Abstract: An improved apparatus for extracting power from waves is provided. The apparatus (10) comprises at least one pair of buoyant body members (12A,12B) connected to one another by a coupling (14) which permits relative rotation between the body members (12A,12B) about first and second non-parallel axes of rotation (A,B). The apparatus further comprises a power extraction system comprising at least one power extraction element (16) having a first end connected to a first of the body members (12A) and a second end connected to a second of the body members (12B) such that the element resists and extracts power from the relative rotation between the body members (12A,12B).

Abstract: A connection system comprises a first latching (5) element mountable on or to a first body (3) and a second latching element (6) mountable on or to a second body (4), and means for drawing the first latching element and second latching element together to facilitate connection of the first body to the second body, said drawing means comprising a buoyant winching system (2). A connection method for connecting a first body carrying a first latching element to a second body carrying a second latching element, comprises the steps of connecting a winch line (11) from a buoyant winching system comprising a winch, through the first latching element to a tether line attached to the second latching element and operating the winch to draw the first and second latching element together to connect the first body to the second body wherein the connection of the winch line to the tether line is carried out without tension in the winch line.