Patent ID: 7585129
Filing Date: 2009-09-08
Classification: E02B,Y02A

Abstract:
1. Swell attenuating device comprising a horizontal plate slightly immersed in an incident sea swell to protect a natural or man-made structure from said incident sea swell, said plate being held in position under a free surface of the water and presenting perpendicular hump-shaped upstream and downstream edges raised to a positive dimension above said free surface of the water, so that the incident sea swell cannot propagate freely over said plate, the downstream edge facing toward the natural or man-made structure and the upstream edge facing away from the natural or man-made structure, each of said upstream and downstream edges being extended at their base by a respective upstream-facing and downstream-facing tab-shaped element of the same specific length, thus forming a symmetrically profiled structure in the form of a so-called “camel's hump”, characterized in that ( 1 ) a raft between said upstream and downstream edges comprises orifices extending therethrough to reduce vertical compressing forces generated by a mass of water disposed under said horizontal plate, and ( 2 ) the perpendicular upstream edge under said free surface of the water comprises orifices extending therethrough over at most 50% of a surface to reduce horizontal compressing forces acting on the device.