NOVELTY - The unit has a flexible connection unit (3) e.g. steel wire, for connecting a floating body to a translator, where a direction of movement of the translator defines a center axis (C). A submerged station has a guiding device (9) for guiding the flexible connection unit, where the guiding device includes a set of cylindrical rollers (15a, 15b, 16a-16c, 17a, 17b, 18a-18c). Each roller is rotated around a respective axis. The rollers are arranged to form a passage for the flexible connection unit, where the passage comprises an upper end and a lower end.    USE - Wave power unit for producing electric power in a wave power plant and supplying electric power to an electrical network (all claimed).    ADVANTAGE - The power unit has the station including guiding device for guiding the flexible connection unit, where the device includes the rollers among which each roller is rotated around the respective axis and the rollers are arranged to form the passage for the flexible connection unit, thus allowing a generator to be operated in a proper manner irrespective of a relative lateral position of the floating body. The connection unit can roll on the rollers instead of scavenging against a stationary surface by arranging the rollers to form the passage for the connection unit, thus increasing efficiency of the unit, and hence reducing wear on the connection unit. The power unit has a stationary guiding unit for controlling a guiding process of the connection unit at a set of large lateral deviations of the floating body with reduced number of the rollers, thus simplifying the guiding device and inexpensively manufacturing the power unit with reduced failure risk. The stationary guiding unit has a shape of a ring coaxial with the center axis such that manufacturing and maintenance costs of the stationary guiding unit are reduced, where the ring comprises a curved inner surface for minimizing wear. The axes of the rollers are perpendicular to the center axis, thus reducing relative movement between the rollers and the connection unit, and hence minimizing sliding of the connection unit on the rollers.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following:    (1) an electrical network comprising a network    (2) a method for producing electric power by providing a submerged station.    DESCRIPTION OF DRAWING(S) - The drawing shows a side perspective view of a wave power unit.    Center axis (C)    Flexible connection unit (3)    Guiding device (9)    Cylindrical rollers (15a, 15b, 16a-16c, 17a, 17b, 18a-18c)    Small shaft aperture (20)