Paravane for a barrier towed by a vessel, wherein the paravane comprises: - a floating body; - a main skirt suspended below the floating body, wherein the main skirt is defined with a longitudinal direction between its front end and its rear end; - an upper lamella having a first point secured to the front end of the main skirt, a second point secured to the rear end of the main skirt and a third point provided at a distance from the main skirt; - a lower lamella having a first point secured to the front end of the main skirt below the upper lamella, a second point secured to the rear end of the main skirt below the upper lamella and a third point provided at a distance from the main skirt; - a front towing interface connected to the third point of the upper lamella and the third point of the lower lamella; wherein the floating body, the main skirt, the upper lamella and the lower lamella are made of one or more flexible materials; and wherein the upper lamella has a skirt facing edge defined as the edge between the first point and the second point, wherein the skirt facing edge is secured continuously or at intervals to the main skirt; wherein the paravane comprises at least one intermediate lamella having a first point secured to the front end of the main skirt between the upper lamella and the lower lamella, a second point secured to the rear end of the main skirt between the upper lamella and the lower lamella and a third point provided at a distance from the main skirt, wherein the third point is connected to the front towing interface; characterized in that: - the paravane comprises a plurality of stiffening plates fastened to the main skirt; - the stiffening plates have a height being lower than a height between the lamellae (31, 32, 33); - the stiffening plates are fastened to the main skirt between the lamellae (31, 32, 33). - a floating body; - a main skirt suspended below the floating body, wherein the main skirt is defined with a longitudinal direction between its front end and its rear end; - an upper lamella having a first point secured to the front end of the main skirt, a second point secured to the rear end of the main skirt and a third point provided at a distance from the main skirt; - a lower lamella having a first point secured to the front end of the main skirt below the upper lamella, a second point secured to the rear end of the main skirt below the upper lamella and a third point provided at a distance from the main skirt; - a front towing interface connected to the third point of the upper lamella and the third point of the lower lamella; wherein the floating body, the main skirt, the upper lamella and the lower lamella are made of one or more flexible materials; and wherein the upper lamella has a skirt facing edge defined as the edge between the first point and the second point, wherein the skirt facing edge is secured continuously or at intervals to the main skirt; wherein the paravane comprises at least one intermediate lamella having a first point secured to the front end of the main skirt between the upper lamella and the lower lamella, a second point secured to the rear end of the main skirt between the upper lamella and the lower lamella and a third point provided at a distance from the main skirt, wherein the third point is connected to the front towing interface; characterized in that: - the paravane comprises a plurality of stiffening plates fastened to the main skirt; - the stiffening plates have a height being lower than a height between the lamellae (31, 32, 33); - the stiffening plates are fastened to the main skirt between the lamellae (31, 32, 33). - the paravane comprises a plurality of stiffening plates fastened to the main skirt; - the stiffening plates have a height being lower than a height between the lamellae (31, 32, 33); - the stiffening plates are fastened to the main skirt between the lamellae (31, 32, 33).