The Double Sheetbend is a more secure form of the Sheetbend.
The thicker rope of the two is used to form a bight, and the thinner
rope is passed up through the bight, around the back of the bight,
around again before tucking under itself.
Tip. It is particularly useful when the thickness of the two ropes
varies considerably, or when a more secure Sheetbend is required.
