Page 617 - Bob Holtzman "The Field Guide to Knots How to Identify, Tie, and Untie Over 80 Essential Knots for Outdoor Pursuits"

6. The finished knot consists of two underhand crossing turns. The working end is parallel and adjacent to
the underhand leg of the crossing turn on the near horn. The overhand leg of the near crossing turn holds
down the working end. For additional security, another underhand crossing turn may be added to the near
horn. This is especially important if the cleat is mounted vertically and the second overhand crossing turn is
around the bottom horn of the cleat.

Uses: tying boats in slips and at docks; securing halyards, sheets and fenders; flag halyards
Pros: easy to tie and untie; secure

Cons: none known

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