Page 44 - Alpheus Hyatt Verrill "Knots, Splices and Rope-Work"

Figs. 81-82 illustrate two other forms of shortenings, but these can only be used where
the end of the rope is free, and are intended for more permanent fastenings than the
ordinary sheepshank; while Fig. 83 is particularly adapted to be cast loose at a moment's
notice by jerking out the toggles, A, B.