Centre system

Assembly of a first and second elongate tubular element (2, 5), such as an underwater pile accommodated within a noise mitigation screen, and a centre system (11) suitable for centring the first elongate tubular element (2) and the second elongate tubular element (5), and wherein the assembly has a common central longitudinal axis (13) along which axis both the first and second tubular element extend and wherein the centre system comprises;

• a first coupling means (30a, 30b, 30c) for fixedly coupling the centre system with one of the first and second tubular elements, and
• a second coupling means (31a, 31b, 31c) for engaging the other of the first and second tubular element for centring the other tubular element at the common central longitudinal axis (13), and
• a drive system having at least two drive means (28a, 28b, 28c) arranged around the common central longitudinal axis (13), each drive means having a line of action (32a, 32b, 32c) for applying a centring force at a circumference of one of the first and second tubular elements towards a centred position of said one of the first and second tubular elements at the common central longitudinal axis (13), wherein the at least two drive means are mutually coupled for evenly driving said one of the first and second tubular elements for maintaining said one of the first and second tubular elements in its centred position,
• and wherein the centre system is fixedly coupled with the one of the first and second tubular elements, and engages the other tubular element for centring the other tubular element at the common central longitudinal axis (13) such that an intermediate space (8) between the one of the first and second tubular elements and the other tubular element is optimal with respect to noise dampening.