Page 121 - Derek E. Avery - The new encyclopedia of knots

figure 82.3

figure 82.4

Jury mast head knot: used as a temporary measure in an emergency
rigging of a jury mast, and is placed at the mast head to form the band to
which the stays and shrouds of the jury mast are secured. The greater the
strain set up in the rigging, the tighter the knot will grip the mast. It is
made in the centre of a rope with sufficient line to provide for the
backstay(s).

Begin by laying down three bights (figure 83.1) which are then arranged

one on top of another as in figure 83.2. Then rearrange these so that the
left-hand part of the right-hand side (or lower) bight lies on top of the
right-hand part of the left-hand side (or top) bight, with their overlapping
in the centre on the middle bight. Now pass your hands (figure 83.3)
under and over the outer bights to pick up the two overlapping bights in
the centre. Pull these two bights out so that they weave over and under

the outer loops. Once out, you can pull up the loop lying at the top to
give a clover-leaf effect (figure 83.4), with three loops to which the
shrouds and forestay can be attached. The mast sits in the centre of the
knot, and the two ends of the rope are tied together with a bowline (see
page 21), the long end forming the back stay.