An offshore structure (1) with tubular braces (110) that are joined by joints (125) at nodes (120). The tubular braces (110) may be made of steel. The joint (125) is formed by means of casted concrete or grout in a receiving joint volume (150) in one or both of the braces (110). Also disclosed is a a keel structure formed by braces (110) and joints (125) as outlined and a combination of a wind turbine and such offshore structure (1).

The present invention provides a system which allows users to mount multiple pieces of equipment to a tower and it has the unique capability to adjust a steel frame to level without additional equipment. In accordance with a first preferred embodiment, the present invention includes a duel locking system that includes a taper adjusting bolt to adjustably position the frame level with the earth. According to still further aspects of the present invention, the present invention further includes attachable wall section elements which include at least upper and lower lateral spanning elements having first and securing weldments which preferably may integrally connect to the adjustable frame elements of the present invention. According to still further aspects of the present invention, the present invention preferably further includes upper and lower weldment connecting plates which are preferably connected to and extend from the upper and lower lateral spanning elements.

The present invention provides a system which allows users to mount multiple pieces of equipment to a tower and it has the unique capability to adjust a steel frame to level without additional equipment. In accordance with a first preferred embodiment, the present invention includes a duel locking system that includes a taper adjusting bolt to adjustably position the frame level with the earth. According to still further aspects of the present invention, the present invention further includes attachable wall section elements which include at least upper and lower lateral spanning elements having first and securing weldments which preferably may integrally connect to the adjustable frame elements of the present invention. According to still further aspects of the present invention, the present invention preferably further includes upper and lower weldment connecting plates which are preferably connected to and extend from the upper and lower lateral spanning elements.

The present disclosure relates to a helical tower comprising a plurality of helical tower windings which are helically connected to each other for travel by a vehicle, each of the tower windings being formed from a plurality of winding modules which are connected with each other, which also connect adjacent tower windings to one another, and wherein a respective upper one of the tower windings can be mounted from a respective lower one of the tower windings by connecting further winding modules.

The present disclosure relates to a helical tower comprising a plurality of helical tower windings which are helically connected to each other for travel by a vehicle, each of the tower windings being formed from a plurality of winding modules which are connected with each other, which also connect adjacent tower windings to one another, and wherein a respective upper one of the tower windings can be mounted from a respective lower one of the tower windings by connecting further winding modules.

Embodiments of a guided surface waveguide probe are disclosed. One embodiment, among others, has a guided surface waveguide probe including a charge terminal elevated over a lossy conducting medium by way of a support structure, and a substantially planar support platform situated under the support structure and co-planar with a roof of a substructure of the guided surface waveguide probe. The platform can include an aperture of sufficient size to enable a phasing coil to be moved vertically through the aperture for installation and removal of same. The support platform can be made from or include an insulating material part that is sufficiently insulating to prevent degradation of the support platform caused by the electric fields. A primary coil associated with the guided surface waveguide probe can magnetically couple with the phasing coil to excite the charge terminal to produce a guided surface wave on the lossy conducting medium.