Bowline on a bight advocate the use of a figure eight twisted version of the Bowline on a bight. This knot can be used to provide a toe hold in the middle of a rope; to make an emergency bosun's chair; and to create an upper rope "block" to make a crude purchase by threading the rope round an anchor point and then back up through the loop. It is sometimes used in sport climbing to tie into two anchor bolts independently. This knot is convenient when a dependable loop is required but neither end of the line is available. It's also commonly used
Windsor knot Windsor knot The Windsor knot, also referred to as a Full Windsor or as a Double Windsor to distinguish it from the half-Windsor, is a method of tying a necktie. The Windsor knot, compared to other methods, produces a wide symmetrical triangular knot. The knot is often thought to be named after the Duke of Windsor (King Edward VIII before his abdication). It is likely, however, that it was invented by his father, George V. The Duke preferred a wide knot and had his ties specially made with thicker cloth in order to produce a wider knot when tied with