Double Sheet Knot or Double Becket Bend

Double Sheet Bend Knot

The double sheet bend or double becket bend is a strong knot used to tie two ropes (usually of different thicknesses or rigidity) together. It is a doubled version of the sheet bend.

To tie the double sheet bend, start by making a bight in the larger line. Pass the working end of the smaller line up through the bight, around behind the bight, and beneath the loop in the smaller line (that's a sheet bend). Then once again, pass the working end along the same path, around behind the bight and beneath the loop in the smaller line.

As with the standard sheet bend, the two free ends should end up on the same side of the knot. If they do not, a left-handed double sheet bend results, which is much weaker.

Note that in the picture to the right, it is unclear which end of the larger-diameter rope is the free end. In order to be tied correctly, the upper line should be the free end (i.e., on the same side of the knot as the free end of the smaller line).