Abstract: An arrangement and a method to align a part of a wind turbine to a counterpart is provided. The part of the wind turbine and its counterpart are approached in a main direction of approach, to be connected. The arrangement includes a first and a second alignment tool, whereby the alignment tools include a first area to be connected to the part of the wind turbine, and a second area that protrudes over the physical dimensions of the part of the wind turbine mainly in the main direction of approach. The second area is arranged and prepared in a way to abut on the counterpart, in a direction perpendicular to the main direction of approach, as an arrester to stop and/or hinder a movement of the part of the wind turbine in respect to the counterpart during the alignment.

Abstract: An arrangement and a method to align a part of a wind turbine to a counterpart is provided. The arrangement includes an alignment tool. The alignment tool includes a first area to be connected to a part of the wind turbine, and a second area that protrudes over the physical dimensions of the part of the wind turbine. The second area is arranged and prepared in a way that it abuts on the counterpart during the alignment of the part of the wind turbine and its counterpart. The arrangement includes a second alignment tool. The second alignment tool protrudes less far over the physical dimensions of the part of the wind turbine then the first alignment tool. Thus the first alignment tool abuts to the counterpart before the second alignment tool when the part of the wind turbine approaches the counterpart.

Abstract: A strake for a wind turbine tower is provided A strake for a wind turbine tower is disclosed, whereby the strake is realized as a detachable strake to be mounted to a wind turbine tower to reduce vortex induced vibrations. The strake includes an outer structure and the outer structure defines three sides that are interconnected by three angles, so that the strake includes a mainly triangular shape in its cross-cut perpendicular to its longitudinal direction. The strake includes at least one element that includes a contiguous cavity that is filled with a fluid.

Abstract: A strake for a wind turbine tower is provided A strake for a wind turbine tower is disclosed, whereby the strake is realized as a detachable strake to be mounted to a wind turbine tower to reduce vortex induced vibrations. The strake includes an outer structure and the outer structure defines three sides that are interconnected by three angles, so that the strake includes a mainly triangular shape in its cross-cut perpendicular to its longitudinal direction. The strake includes at least one element that includes a contiguous cavity that is filled with a fluid.

Abstract: An arrangement and a method to align a part of a wind turbine to a counterpart is provided. The part of the wind turbine and its counterpart are approached in a main direction of approach, to be connected. The arrangement includes a first and a second alignment tool, whereby the alignment tools include a first area to be connected to the part of the wind turbine, and a second area that protrudes over the physical dimensions of the part of the wind turbine mainly in the main direction of approach. The second area is arranged and prepared in a way to abut on the counterpart, in a direction perpendicular to the main direction of approach, as an arrester to stop and/or hinder a movement of the part of the wind turbine in respect to the counterpart during the alignment.

Abstract: An arrangement and a method to align a part of a wind turbine to a counterpart is provided. The arrangement includes an alignment tool. The alignment tool includes a first area to be connected to a part of the wind turbine, and a second area that protrudes over the physical dimensions of the part of the wind turbine. The second area is arranged and prepared in a way that it abuts on the counterpart during the alignment of the part of the wind turbine and its counterpart. The arrangement includes a second alignment tool. The second alignment tool protrudes less far over the physical dimensions of the part of the wind turbine then the first alignment tool. Thus the first alignment tool abuts to the counterpart before the second alignment tool when the part of the wind turbine approaches the counterpart.