Device used for the tying of a proper bowline knot

A knot-tying guide comprising a length of a supportive material, whose upper surface has been adapted to stabilize and hold a section or cordage, and which has been formed into the shape of an open bight wherein said bight contains space between the upper surface of the inferior section and the lower surface of the superior section where the material transverses itself in forming the bight and is attached by a connecting means at one of its termini to a U-shaped length of a supporting material, whose upper surface has also been adapted to stabilize or hold a section of cordage, in such a manner that the termini of said U-shaped length lie within the vertical plane of said open bight and in which manner the two lengths, together, provide a form of a knot for the cordage, and wherein both lengths of supportive material are marked, by an indicating means as to starting point, direction and/or end point for inserting the cordage.