Abstract: Provided is a helical strake set to reduce vortex induced vibrations of a tower, intended to be transported unassembled in a container, including a plurality of identical attachable segments, wherein each segment includes a main body of hollow pyramidal configuration including a wide polygonal end a narrow polygonal end and a narrow polygonal portion firmly attached to the narrow polygonal end, and each segment further including a cap including a wide polygonal portion able to fit in the wide polygonal end by a fastening element, wherein all main bodies and caps are able to be piled in one into another in a container yielding a significant reduction in seaborn transport volume and later assembled on site to reduce vortex induced vibrations of a tower.

Abstract: Provided is a helical strake set to reduce vortex induced vibrations of a tower, intended to be transported unassembled in a container, including a plurality of identical attachable segments, wherein each segment includes a main body of hollow pyramidal configuration including a wide polygonal end a narrow polygonal end and a narrow polygonal portion firmly attached to the narrow polygonal end, and each segment further including a cap including a wide polygonal portion able to fit in the wide polygonal end by a fastening element, wherein all main bodies and caps are able to be piled in one into another in a container yielding a significant reduction in seaborn transport volume and later assembled on site to reduce vortex induced vibrations of a tower.

Abstract: A tower for a wind turbine extending axially along a longitudinal axis of the wind turbine includes a rail attached to an external surface of the tower, the rail providing a guide to which a service trolley is attachable in order to be movable along the rail. The tower includes: a plurality of axially adjacent tower segments, each tower segment extending axially between two axial ends, a respective flange being provided at one or both of the axial ends for connecting the respective tower segment to another tower segment. The rail is provided at the flange.