Page 298 - Buck Tilton - Outward Bound Ropes, Knots, and Hitches 2 ed.

Bring the inner bight under the neck of the bottle

and through the loop. Tighten by pulling on the
inner bight and adjust the whole knot until it
seats acceptably against the neck.

Knife Lanyard Knot

THIS KNOT CREATES A FIXED LOOP FROM WHICH A

KNIFE OR OTHER OBJECT CAN BE HUNG

Considering its simplicity, this is certainly one of the most
attractive lanyard knots—and for that reason, one of the

most often used. This knot was originally intended to create
a fixed loop on a neck lanyard from which a seaman would

suspend his knife. It can, of course, suspend many things
and is known by other names, including the bosun’s or

boatswain’s whistle knot, the pipe lanyard knot, and the
two-strand diamond knot.

Knife Lanyard Knot: Step 1