Abstract: The invention relates to a wave-power unit for the production of electric power. It comprises a floating body (1) arranged for floating on the sea and an electric linear generator (2) having a stator (5) and a translator (8) reciprocating along a center axis. The stator (5) is arranged to be anchored in the bed of the sea and the translator (8) is connected to the floating body (1) by connection means (3, 7). According to the invention the generator (2) is enclosed in a water-tight encapsulation (4) having an upper end wall with an opening through which the connection means (7) extends. The opening has a seal (12) that seals against the connection means (7). The seal (12) is flexibly mounted. The invention also relates to the use of the wave-power unit and to a method for producing electric power.

Abstract: A wave power unit including a buoy, adapted to float on a water surface (2), and a electric generator is connected to the buoy through connection means (4, 12, 13). The buoy when floating on a water surface (2) and when seen in a direction perpendicular to the water surface has the shape of a closed loop enclosing a inner opening substantially free of elements related to the wave power unit.

Abstract: The invention relates to a wave-power unit for the production of electric power. It comprises a floating body (1) arranged for floating on the sea and an electric linear generator (2) having a stator (5) and a translator (8) reciprocating along a center axis. The stator (5) is arranged to be anchored in the bed of the sea and the translator (8) is connected to the floating body (1) by connection means (3, 7). According to the invention the generator (2) is enclosed in a water-tight encapsulation (4) having an upper end wall with an opening through which the connection means (7) extends. The opening has a seal (12) that seals against the connection means (7). The seal (12) is flexibly mounted. The invention also relates to the use of the wave-power unit and to a method for producing electric power.

Abstract: The invention relates to a wave power unit with a buoy (3), adapted to float on a water surface (2). An electric generator (5) is connected to the buoy through connection means (4, 12, 13). According to the invention the buoy (3) when floating on a water surface (2) and when seen in a direction perpendicular to the water surface has the shape of a closed loop enclosing a inner opening (14). The invention also relates to a buoy (3) for a wave power unit, which buoy has the corresponding features as above. Further, the invention relates to the use of the invented wave power unit and to a method for producing electric energy with the invented wave power unit.