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: The invention relates to an assembly for centring a first elongate tubular element and a second elongate tubular element, such as an underwater pile accommodated within a noise mitigation screen, at a common central longitudinal axis along which axis both the first and second element extend, and wherein the centre system is provided with first coupling element for fixedly coupling the centre system with one of the first and second tubular elements, and second coupling element for engaging the other tubular element for centring the other tubular element at the central axis.

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 measuring system suitable for determining parameter(s) of a pile during an installation of the pile is disclosed. The pile measuring system comprises at least one positioning sensor and a parameter calculator. Each of the at least one positioning sensor is attached or attachable to a location on a sleeve and configured to measure position coordinates of the respective location on the sleeve. The parameter calculator is suitable for determining the parameter(s) of the pile from the position coordinates measured by the at least one positioning sensor.

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 is provided. The template includes a plurality of guides for the foundation elements, which guides are fixed relative to one another by means of a frame. At least one of the guides includes a sound-insulating sleeve for surrounding a foundation element during driving.

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 device for and methods of reducing sound vibrations in a liquid resulting from a sound source arranged below the liquid level of a body of water are disclosed. The device includes an elongate tube which can be arranged over the sound source, the tube comprising an outer wall and inner wall with an intermediate space between the inner and outer wall.

Abstract: A pile measuring system suitable for determining parameter(s) of a pile during an installation of the pile is disclosed. The pile measuring system comprises at least one positioning sensor and a parameter calculator. Each of the at least one positioning sensor is attached or attachable to a location on a sleeve and configured to measure position coordinates of the respective location on the sleeve. The parameter calculator is suitable for determining the parameter(s) of the pile from the position coordinates measured by the at least one positioning sensor.

Abstract: A measuring system for controlling perpendicularity of a pile during driving of the pile includes a mounting frame for coupling the measuring system with a pile driving system, and a measuring frame provided with at least one measuring device for measuring perpendicularity of the pile. The measuring frame can be moveably coupled with the mounting frame.

Abstract: A device for and methods of reducing sound vibrations in a liquid resulting from a sound source arranged below the liquid level of a body of water are disclosed. The device includes an elongate tube which can be arranged over the sound source, the tube comprising an outer wall and inner wall with an intermediate space between the inner and outer wall.

Abstract: The present invention relates to a device for the passive reduction of the sound vibrations in a liquid resulting from a sound source arranged below the liquid level of a body of water, the device comprising an elongate tube which can be arranged over the sound source, the tube comprising an outer wall and inner wall, wherein the tube is designed to maintain a certain desired pressure in the intermediate space between the inner and outer wall. In this case, the pressure is reduced with respect to the ambient pressure. As a result of the reduced pressure, the sound vibrations will less readily travel to the outside and the noise level in the area around the tube is reduced.

Abstract: The present invention relates to a device for passively reducing the noise vibrations in a liquid resulting from a sound source which is arranged below the liquid level of a body of water, the device comprising a noise-insulating pipe which is designed to be arranged around the sound source, wherein the pipe comprises a number of telescopically extendable and retractable pipe sections, fastening means for attaching at least one first and one second pipe section to one another in extended and/or retracted position, wherein the fastening means are designed to allow the mutual displacement of the pipe sections in a starting position and to attach the pipe sections to one another in a fastening position, and wherein the fastening means are also designed to keep the first and second pipe sections substantially acoustically disconnected in the fastening position.

Abstract: The invention relates to an assembly for centring a first elongate tubular element and a second elongate tubular element, such as an underwater pile accommodated within a noise mitigation screen, at a common central longitudinal axis along which axis both the first and second element extend, and wherein the centre system is provided with first coupling element for fixedly coupling the centre system with one of the first and second tubular elements, and second coupling element for engaging the other tubular element for centring the other tubular element at the central axis.

Abstract: The invention relates to a method of installing foundation elements, in particular (mono)piles (2), in an underwater ground formation (3), by means of a driver (4), comprising the steps of placing a foundation element (2) on the underwater ground formation (3) and holding the foundation element (2) in place by means of a gripper (10) mounted on a surface vessel, placing a sleeve (6) for reducing noise input from the driver (4) about the foundation element (2), disengaging the gripper (10), lowering the sleeve (6) onto the ground formation (3), and placing the driver (4) on top of the foundation element (2). The sleeve (6) is held at least laterally with a guide (11) mounted on the surface vessel, at least when disengaging the gripper (10).

Abstract: The invention relates to a measuring system for controlling perpendicularity of a pile during driving of the pile, wherein the measurement system comprises; a mounting frame for coupling the measuring system with a pile driving system, a measuring frame provided with at least one measuring device for measuring perpendicularity of the pile. A measuring system for controlling perpendicularity of a pile during driving of the pile, wherein the measurement system includes; a mounting frame for coupling the measuring system with a pile driving system, a measuring frame provided with at least one measuring device for measuring perpendicularity of the pile.