Double Fishermans


  • Used for joining two ropes together, and is especially recommended to join climbing or caving ropes.


  • Excellent for both natural and artificial fibre ropes, whether smooth-woven or laid, wet or dry.
  • Once tightened, this knot will never spill, so it is very secure. However, during tightening the ends can pull through the knot, so generous ends should be left protruding when tied.
  • When joining smooth (kernmantle) ropes, it is almost always possible to untie this knot, even after considerable loading.
  • Suitable to join ropes of uneven thickness.


  • Relatively bulky, and uses lots of rope.