Abstract: The present invention relates to a blade positioning system configured for positioning wind turbine blades at a hub of a nacelle of a wind turbine from an installation vessel at an offshore location, the blade positioning system comprising: the installation vessel comprising: — at least one lifting device configured for lifting wind turbine components, and — an auxiliary support tower extending upwardly from the installation vessel, the auxiliary support tower comprising: o a nacelle support for supporting the nacelle, o a root end moving assembly defining a guide path which extends over a vertical distance, the root end moving assembly comprising a movable root end support base and a root end support configured for supporting and guiding the root end of the blade, the root end support being connected to the movable root end support base, the root end support being movable along the guide path, the root end moving assembly being configured for moving the root end of the blade along the guide path from the eng

Abstract: The present invention relates to a support structure for supporting a top structure, in particular a wind turbine, above the ground or a seabed, the support structure comprising: one single support pile having a length and a first outer diameter, the one single support pile comprising an upper part configured and intended to extend above the ground or the seabed, wherein the upper part of the support pile is configured to be connected to the top structure; a lower part configured to be in contact with the ground or seabed, wherein the support pile is configured to exert an upward vertical force on the top structure in order to carry the top structure; a plurality of foundation guides connected to the lower part of the single support pile, each foundation guide having an opening extending in a direction of the support pile.

Abstract: The present invention relates to a tubular member configured to be supported by a pipe support device on board a pipelay vessel, the tubular member comprising at least one load bearing surface which is formed along the outer side of the tubular member, the at least one load bearing surface being constructed and arranged in order to allow a substantial axial load to be imparted onto said tubular member by the pipe support device, wherein the at least one load bearing surface tapers outwardly with respect to a main longitudinal axis of said tubular member. The present invention also relates to a tubular member comprising a plurality of load bearing surfaces. The present invention also relates to a method of laying a pipeline, to a pipe support device, to a pipelay vessel, to a method of processing a tubular member, to a method of assembling a pipe assembly and to a pipe assembly.