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
Bowline it is possible to tie with one hand. As such, a person needing rescue could hold onto the rope with one hand and use the other to tie the knot around their waist before being pulled to safety by rescuers. The Federal Aviation Administration recommends the bowline knot for tying down light aircraft. A rope with a bowline retains approximately 2/3 of its strength, with variances depending upon the nature of the rope, as in practice the exact strength depends on a variety of factors. In the United Kingdom, the knot is listed as part of the training objectives for