Device for protecting the shoreline against the risks of submergence from the sea, comprising a curved front face and protecting dike comprising a plurality of aligned protection devices

A plurality of protective devices (18) designed to be aligned so as to form a protective dike, each protective device (18) comprising:

• a bag (52) comprising a base, a front face, a rear face, and side walls which delimit an upper opening, wherein the base, the front face, the rear face, and the side walls define an interior volume of the bag (52), the bag being configured to define a weighted container by providing ballast, via the upper opening, to the interior volume of the bag;
• a rigid shell (50) with a curved front face (30), the rigid shell (50) being attached to the front face of the bag (52), the bag (50) being positioned behind the curved front face (30) of the rigid shell (50);
• a front surface of the curved front face (30) of the rigid shell (50) being configured to divert water of a wave upward then drive the water of the wave back in a direction of an outflow of the wave;
• wherein the front face (30) of the rigid shell (50) comprises lower and upper edges (30I, 30S) and wherein each curved lines (32) extend between the lower and upper edges (30I, 30S) of the front face (30) of the rigid shell (50),
• wherein each curved line (32) comprises a first sector (32.1) which forms a first arc and which extends from a first point (A0) located on the lower edge (30I) of the front face (30) to a second point (A1), the first sector further comprising a third point (A2) intermediate the first point (A0) and the second point (A1),
• wherein each curved line (32) comprises at least a second sector (32.2) which extends up to a fourth point (A3) located on the upper edge (30S) of the front face (30),
• wherein the second sector (32.2) is a second arc,
• wherein a line passing through the second and fourth points (A1, A3) forms an angle greater than 1° with the vertical, and
• wherein the fourth point (A3) is offset toward the first point (A0) relative to the vertical passing through the second point (A1);
• and
• at least one system for connecting the bag (52) with another bag (52) of another protective device,
• the plurality of protective devices comprising at least a first protective device and a second protective device,
• wherein the at least one system for connecting the bag (52) with another bag (52) of another protective device of each first and second protective device comprises a strap (74) that is integral with the first or second protective device, and which strap has, at a first end, an extension (76) which extends beyond the side face of the bag and, at a second end, at least an attachment system, the extension of the strap of the first protective device being operative to connect to the at least attachment system of the strap of the second protective device.