Water movement damping device

A water-damping device forming a flexible wall (1) arranged in the water in the vicinity of the surface, substantially vertically in a resting static state, comprising assembled, optionally perforated solid unit blocks (4) (5) (2, 3) in which said blocks (4) or in which said blocks are embedded, said cables comprising a first series of cables (2) disposed vertically (ZZ '), Side by side, in parallel to each other and each of said blocks being perforated (4-6) side to side in the vertical direction (ZZ ') to allow the passage of at least one of said vertical cables ( 2) and being assembled to at least one of said vertical cables,Said vertical cables (2) being suspended or stretched at their upper ends and / or respectively tensioned or tied at their lower ends, and said blocks comprising hollow holes (5) that cross them from one side to the other between the front faces (1 (1), and / or hollow spaces (7) between said blocks which give said wall an overall porosity, preferably representing from 5 to 75%, more preferably from 20 to 45% of the surface of the vertical section of said wall, characterized in that - the blocks are assembled in a row with the upper faces of one against the other lower faces along said vertical cables (2), and - Said cables comprise a second series of cables (3) disposed horizontally (XX ') on top of each other in parallel,And - each block (4) is perforated (4-7) from side to side in the horizontal direction (XX '), to allow the passage of at least one of said horizontal ropes (3), and a part At least one of said horizontal cables, thereby ensuring the assembly of the different rows of vertical cables together, and - said blocks are spaced apart (7) at least one of said blocks (6), preferably of elastomeric material, and preferably a bushing (8-1) is threaded at each end of each horizontal cable (3) so that said lugs Are compressed to a substantially uniform prestressing value.