Abstract: A lifting tool for lifting an element of an offshore structure, such as a transition piece of an offshore wind turbine comprises a frame and a plurality of engagement members for engaging an element to be lifted. The engagement members are mounted to the frame at an angular distance from each other about a centerline of the frame. The lifting tool also comprises a hoisting member to be connected to a hoisting cable of a crane, and located within a virtual cylinder on which the engagement members lie. The hoisting member and the frame are interconnected rigidly through at least three linear actuators which are arranged such that the hoisting member is movable with respect to the frame in a plurality of radial directions with respect to the centerline, independently from the engagement members.

Abstract: A pile driving system comprises a lifting element attached or attachable to a hoisting cable of a crane, a pile driver which is mounted to the lifting element and movable with respect to the lifting element in a pile driving direction and a brake for braking a movement of the pile driver with respect to the lifting element. The brake comprises cooperating sliding members at the lifting element and the pile driver, which sliding members are pressed against each other in a direction extending transversely to their mutual sliding direction.

Abstract: The invention relates to a system (1) for use with a crane (4) on a surface vessel (3), comprising a crane tool (15) attached or attachable to a hoisting cable (5) of the crane (4) and one or more adaptors (16) attached or attachable to one or more tools (11-14, 25) for carrying out operations or to one or more components (2, 10), the crane tool (15) comprising a connector (17) and at least one of the adaptors (16) comprising a connector-counterpart (18).

Abstract: A lifting tool for lifting an element of an offshore structure, such as a transition piece of an offshore wind turbine comprises a frame and a plurality of engagement members for engaging an element to be lifted. The engagement members are mounted to the frame at an angular distance from each other about a centerline of the frame. The lifting tool also comprises a hoisting member to be connected to a hoisting cable of a crane, and located within a virtual cylinder on which the engagement members lie. The hoisting member and the frame are interconnected rigidly through at least three linear actuators which are arranged such that the hoisting member is movable with respect to the frame in a plurality of radial directions with respect to the centerline, independently from the engagement members.

Abstract: A coupling system to be temporarily coupled to at least one of a jacket pile and a foundation pile comprises an upper fixation member, a lower fixation member and a lifting device for moving the upper and lower fixation members with respect to each other. The coupling system is provided with at least one of a grout transfer line for guiding grout from a grout supply to a space between a jacket pile and a foundation pile upon installing the jacket pile to the foundation pile, and a cleaning device for cleaning the inner and/or outer side of a foundation pile, and a separating device for separating a jacket pile from a foundation pile upon de-installing the jacket pile with respect to the foundation pile, and a measurement device for determining parameters of a jacket pile and/or a foundation pile.

Abstract: A method of and a noise mitigation system for installing a foundation element, in particular a (mono)pile, includes a screen to be placed about a foundation element, in particular a (mono)pile, during driving of the foundation element in an underwater ground formation, to reduce noise input resulting from the driving into the surrounding water, e.g. a river or sea. The method and system comprise a further screen to be deployed about the (first) screen.

Abstract: The invention relates to a system (1) for use with a crane (4) on a surface vessel (3), comprising a crane tool (15) attached or attachable to a hoisting cable (5) of the crane (4) and one or more adaptors (16) attached or attachable to one or more tools (11-14, 25) for carrying out operations or to one or more components (2, 10), the crane tool (15) comprising a connector (17) and at least one of the adaptors (16) comprising a connector-counterpart (18).

Abstract: A pile driving assembly for installing a pile in an underwater bottom comprises a tubular pile and a hammer for driving the pile into an underwater bottom. The assembly is provided with a soil remover for removing soil inside the pile. The soil remover is located below the hammer and remote from a lower end of the pile in assembled operating condition.

Abstract: A tubular foundation element, in particular a pile e.g. a jacket pile, to be installed in a ground formation has at least one open end, typically both ends open, allowing a pile driver with an anvil to be inserted into the tubular foundation element. The tubular foundation element comprises a support at the inside thereof, which support is adapted to transmit energy from the anvil directly to the tubular foundation element, during installation of the tubular foundation element.

Abstract: The invention relates to a device for transferring personnel, equipment and/or structural elements from a surface vessel to an offshore structure, such as a wind turbine, or to another vessel comprising a foundation mounted or to be mounted on a surface vessel, an arm pivotally connected to the foundation and at least one gripper connected to the free end of the arm for coupling the arm to an offshore structure. A second arm is pivotally connected to the first arm.

Abstract: A template for use in installing a plurality of foundation elements, in particular anchor piles, relative to one another in an underwater ground formation, comprises at least a guide for guiding a foundation element in a guiding direction during driving the foundation element into a seabed, and a frame including a holding member for holding the guide in transverse direction of the guiding direction. The template further comprises a levelling mechanism for levelling the frame with respect to a seabed when it is placed thereon. The guide is freely displaceable with respect to the holding member in the guiding direction.

Abstract: A pile driving assembly for installing a pile in an underwater bottom comprises a tubular pile and a hammer for driving the pile into an underwater bottom. The assembly is provided with a soil remover for removing soil inside the pile. The soil remover is located below the hammer and remote from a lower end of the pile in assembled operating condition.

Abstract: A method of and a noise mitigation system for installing a foundation element, in particular a (mono)pile, includes a screen to be placed about a foundation element, in particular a (mono)pile, during driving of the foundation element in an underwater ground formation, to reduce noise input resulting from the driving into the surrounding water, e.g. a river or sea. The method and system comprise a further screen to be deployed about the (first) screen.

Abstract: A tubular foundation element, in particular a pile e.g. a jacket pile, to be installed in a ground formation has at least one open end, typically both ends open, allowing a pile driver with an anvil to be inserted into the tubular foundation element. The tubular foundation element comprises a support at the inside thereof, which support is adapted to transmit energy from the anvil directly to the tubular foundation element, during installation of the tubular foundation element.

Abstract: The invention relates to a device for transferring personnel, equipment and/or structural elements from a surface vessel to an offshore structure, such as a wind turbine, or to another vessel comprising a foundation mounted or to be mounted on a surface vessel, an arm pivotally connected to the foundation and at least one gripper connected to the free end of the arm for coupling the arm to an offshore structure. A second arm is pivotally connected to the first arm.

Abstract: A template for use in installing a plurality of foundation elements, in particular anchor piles, relative to one another in an underwater ground formation, comprises at least a guide for guiding a foundation element in a guiding direction during driving the foundation element into a seabed, and a frame including a holding member for holding the guide in transverse direction of the guiding direction. The template further comprises a levelling mechanism for levelling the frame with respect to a seabed when it is placed thereon. The guide is freely displaceable with respect to the holding member in the guiding direction.