Device for providing a safe maritime area and method for monitoring wave-breaking

Abstract

The device for providing a safe maritime area includes a structure having vertical filtering walls over the entire periphery of same and a base linking the lower portions of all filtering walls. The structure is provided with buoyancy, so as to keep the base submerged and the upper portions of the filtering walls above the waterline. At least one portion of the surface of the base is sealed. The sealed surface includes a first face inclined transversely relative to the horizontal in an increasing slope from a front wall and a second face extending from the first face to a rear wall. The invention also concerns a method for monitoring wave-breaking.

1 . A device for providing a secure maritime area, comprising:
 a structure having a periphery and being comprised of filtering vertical walls over said periphery; and   a bottom connecting, in a lower portion, said filtering walls,   wherein said structure further comprises a buoyancy means, so as to keep said bottom submerged and said filtering walls above water at an upper portion,   wherein said bottom comprises at least a portion of a tight surface, said tight surface being comprised of a first face inclined transversely to horizontal with an increasing slope from a front wall and a second face extending from said first face to a rear wall.   
     
     
         2 . The device for providing a secure maritime area, according to  claim 1 , wherein said second face is horizontal or inclined transversely with an increasing or decreasing slope from said first face to said rear wall. 
     
     
         3 . The device for providing a secure maritime area, according to  claim 1 , wherein said bottom is divided into at least one tight surface and at least one filtering surface. 
     
     
         4 . The device for providing a secure maritime area, according to  claim 3 , wherein said filtering walls have a filtering surface formed at least partly of a lattice. 
     
     
         5 . The device for providing a secure maritime area, according to  claim 4 , wherein said lattice is at least in part flexible, semi-rigid and/or rigid. 
     
     
         6 . The device for providing a secure maritime area, according to  claim 5 , wherein said lattice of each filtering wall is secured to a fixed frame being comprised of at least one vertical post at each of lateral edge and at least one lower longitudinal beam, at a lower edge, said at least one lower longitudinal beam being connected to each vertical post. 
     
     
         7 . The device for providing a secure maritime area, according to  claim 6 , wherein said fixed frame comprises at least one movable portion in an upper portion. 
     
     
         8 . The device for providing a secure maritime area, according to  claim 1 , wherein said buoyancy means are comprised of floats. 
     
     
         9 . The device for providing a secure maritime area, according to  claim 1 , further comprising: a damping means being comprised of peaks of flexible material arranged along at least one protruding line placed at least at a level of a junction between first and second faces or at a level of filtering walls. 
     
     
         10 . A method for monitoring wave breaking, said method comprising the steps of:
 filtering a swell upon entering a device of  claim 1 ;   forming a wave;   swelling said wave through a slope increasing in the direction of propagation of said wave;   wherein the step of swelling comprises:
 attenuating energy generated by wave breaking through a flat surface and/or a decreasing slope after the increasing slope; and 
   stopping progression of an attenuated swell through a filtering and/or tight surface; and   filtering said attenuated swell upon exit of said device.