Abstract: Described is a device for providing a sizeable, slender object having a longitudinal direction into an underwater bottom from a deck of a vessel. The device includes a lifting means configured to take up the object at a lifting point thereof and position it on the underwater bottom; an upending tool connected to an edge of the vessel and configured to engage a first circumferential part of the object suspended from the lifting means and provide a pivot around which the object can be upended; and a gripping tool connected to an edge of the vessel and configured to engage a second circumferential part of the object suspended from the lifting means, whereby the first and second circumferential parts are optionally spaced apart in the longitudinal direction of the object. The gripping tool includes an actuator system configured to act on at least one of the upending tool and the gripping tool and control movements of at least one of the first and the second circumferential parts, relative to the vessel.

Abstract: A floatable structure is described having a hull and a deck. The floatable structure further includes a mooring system for mooring a second floating structure at a mooring position relative to the floatable structure. The mooring system brings the second floating structure down in the water from an initial floating draft to a larger mooring draft to reduce motions of the second floating structure relative to the floatable structure. A method for mooring a second floating structure using the mooring system is also described.

Abstract: Described is a device for providing a sizeable, slender object having a longitudinal direction into an underwater bottom from a deck of a vessel. The device includes a lifting means configured to take up the object at a lifting point thereof and position it on the underwater bottom; an upending tool connected to an edge of the vessel and configured to engage a first circumferential part of the object suspended from the lifting means and provide a pivot around which the object can be upended; and a gripping tool connected to an edge of the vessel and configured to engage a second circumferential part of the object suspended from the lifting means, whereby the first and second circumferential parts are optionally spaced apart in the longitudinal direction of the object. The gripping tool includes an actuator system configured to act on at least one of the upending tool and the gripping tool and control movements of at least one of the first and the second circumferential parts, relative to the vessel.

Abstract: Described is a self-supporting support structure for wind turbine equipment. The support structure can be accommodated in a hollow transition piece for connecting a tower of an offshore wind turbine to a foundation pile, or in a foundation pile itself. The support structure includes two or more floors placed vertically above each other and supported by upright supports. At least one floor connects substantially fittingly to an internal peripheral wall of the transition piece or the foundation pile, and said floor is provided with means for reducing its surface area, for instance foldable edge parts. Also described is a method for assembling at least a part of an offshore wind turbine, wherein the self-supporting support structure is applied.

Abstract: Described is a self-supporting support structure for wind turbine equipment. The support structure can be accommodated in a hollow transition piece for connecting a tower of an offshore wind turbine to a foundation pile, or in a foundation pile itself. The support structure includes two or more floors placed vertically above each other and supported by upright supports. At least one floor connects substantially fittingly to an internal peripheral wall of the transition piece or the foundation pile, and said floor is provided with means for reducing its surface area, for instance foldable edge parts. Also described is a method for assembling at least a part of an offshore wind turbine, wherein the self-supporting support structure is applied.