The sheet bend extension is a bit harder to learn than the square knot extension. Once you get the hang of it, however, it’s fast to tie and easy to adjust, and it produces a flatter and more comfortable knot.
If you’re using rope with knotted ends, you might like the lark’s head extension.
1We’re going to extend the green rope by adding the blue rope to it.
2Pass the green rope up through the bight of the blue rope and over one side of the blue rope.
3Go under the blue rope.
4Go over the blue rope and back under the green rope.
5Snug the knot.
This knot doesn’t appear in ABOK.
This is just a sheet bend (ABOK 1431) joining a doubled rope and one single rope.