Absorber unit for the absorption of wave energy from a body of water, the absorber unit having a fore end and an aft end, wherein under operation the fore end faces towards the incoming waves, and the aft end faces away from the incoming waves, the absorber unit comprising - an absorber element of the front pivot type with a front end comprising a front pivot axis around which the absorber element under operation reciprocates between a lower turning position and an upper turning position, and with a rear end extending from a lower rear edge to an upper rear edge, wherein under operation the front end faces towards the incoming waves, and the rear end faces away from the incoming waves, wherein the lower rear edge is located in a first radial direction at a first distance from the pivot axis, and the upper rear edge is located in a second radial direction at a second distance from the pivot axis, wherein the first and second radial directions (116, 117) define an acute tip angle (alpha) of the absorber element, wherein the first distance determines the absorber element length FI, and wherein the absorber element has a rear side, a top side, and a front side, the absorber unit characterized in that it comprises: - a frame structure defining an absorber chamber and being configured to be essentially at rest with respect to the body of water, wherein the frame structure is configured for attachment to or as a part of a floating platform, the frame structure pivotally supporting the absorber element within the absorber chamber from the essentially horizontal front pivot axis at an axis height Fa above an average surface level S of the body of water, wherein the absorber element in an idle position under still water conditions is partially submerged, with an idle draught Fd of the absorber element being determined by the depth of submersion of the lower rear edge below the average surface level S, wherein the frame structure comprises a bottom plate, wherein a front portion of the bottom plate has a minimum distance and a maximum distance from a level of the front pivot axis, the minimum distance corresponding to the sum of the pivot axis height Fa and the idle draught Fd of the absorber element, and the maximum distance not exceeding the absorber element length Fl. - an absorber element of the front pivot type with a front end comprising a front pivot axis around which the absorber element under operation reciprocates between a lower turning position and an upper turning position, and with a rear end extending from a lower rear edge to an upper rear edge, wherein under operation the front end faces towards the incoming waves, and the rear end faces away from the incoming waves, wherein the lower rear edge is located in a first radial direction at a first distance from the pivot axis, and the upper rear edge is located in a second radial direction at a second distance from the pivot axis, wherein the first and second radial directions (116, 117) define an acute tip angle (alpha) of the absorber element, wherein the first distance determines the absorber element length FI, and wherein the absorber element has a rear side, a top side, and a front side, the absorber unit characterized in that it comprises: - a frame structure defining an absorber chamber and being configured to be essentially at rest with respect to the body of water, wherein the frame structure is configured for attachment to or as a part of a floating platform, the frame structure pivotally supporting the absorber element within the absorber chamber from the essentially horizontal front pivot axis at an axis height Fa above an average surface level S of the body of water, wherein the absorber element in an idle position under still water conditions is partially submerged, with an idle draught Fd of the absorber element being determined by the depth of submersion of the lower rear edge below the average surface level S, wherein the frame structure comprises a bottom plate, wherein a front portion of the bottom plate has a minimum distance and a maximum distance from a level of the front pivot axis, the minimum distance corresponding to the sum of the pivot axis height Fa and the idle draught Fd of the absorber element, and the maximum distance not exceeding the absorber element length Fl. - a frame structure defining an absorber chamber and being configured to be essentially at rest with respect to the body of water, wherein the frame structure is configured for attachment to or as a part of a floating platform, the frame structure pivotally supporting the absorber element within the absorber chamber from the essentially horizontal front pivot axis at an axis height Fa above an average surface level S of the body of water, wherein the absorber element in an idle position under still water conditions is partially submerged, with an idle draught Fd of the absorber element being determined by the depth of submersion of the lower rear edge below the average surface level S, wherein the frame structure comprises a bottom plate, wherein a front portion of the bottom plate has a minimum distance and a maximum distance from a level of the front pivot axis, the minimum distance corresponding to the sum of the pivot axis height Fa and the idle draught Fd of the absorber element, and the maximum distance not exceeding the absorber element length Fl.