Page 242 - Buck Tilton - Outward Bound Ropes, Knots, and Hitches 2 ed.

allow the knot to lie flat if pressed.

Water Knot: Step 2

Slide the second end of web-bing into the first

overhand knot, as if you’re tracing the knot. Start
at the point where the first end of webbing leaves

the first overhand knot, as shown in the
photograph.

Most climbers today use webbing sewn into slings (or

runners) by a manufacturer. Webbing is nylon woven stoutly
into a tubular shape, then flattened. If, however, you need

to tie a sling or loop, or tie two lengths of webbing together,
the relatively simple water knot works well. It is created by

weaving two overhand knots together, one the mirror image
of the other. It can be tied in any material, including rope