Page 162 - Derek E. Avery - The new encyclopedia of knots
P. 162
figure 106
Round turn: start with a turn (see page 181) of 360 degrees around the
object, then take the end around a second time. This is then a round turn.
It is worth remembering that the number of round turns taken is always
one less than the number of sections of rope that you can see. Our
illustration shows a round turn on the left and three round turns on the
right of the rail (figure 107).
Round turn and two half hitches: the most commonly used hitch, used
to secure a line to a post.