Tying Ropes of Different Diameters - Disaster Skills

Two ropes of different diameters may be fastened together by what is called a sheet-bend, sometimes known as a becket bend or a weaver's knot.

Yeah, caregiver222 believes you really have to learn this simple knot. It hold best under a load.

Let's suppose you attach a weight to a LIGHT line to throw across a water gap. It could be a flooded street. Then you want to attach a heavier line to the light line and pull the heavier line across to fasten at both sides and use as a "safety line" in a flood disaster. A sheet bend would be what you would use.