Page 58 - Mark Gommers "Bowlines Analysis"

This structure was presented to the
IGKT by Constant Xarax on 25 April 
2014 – although it was known to him
prior to this date.
Figure 25a Figure 25b
There are some interesting design
elements that are worth noting:
1. It is TIB
2. There are 3 rope diameters within
the nipping loop
3. There are no sharp bends in the tail
securing maneuvers.
4. Under load, the tail is held captive
between each leg of the collar due to
a squeezing effect. This enhances
security.

The structure seems to be secure and
stable and also resistant to ring
loading.

Ampersand Bowline
Detail view Ampersand Bowline
Conventional view

Original text from Xarax’s post on the IGKT forum 25 April 2014:
“The eye knot presented in this thread was known to me for some time now, but I had not noticed that it was TIB -
probably because I was not searching for PET and TIB eye knots when I had first tied it. You have to be lucky to tie
a new knot, but "Chance favors the prepared mind", and, at that time, it seems that my mind was not prepared yet
for this...
It is a very simple two-collar secure bowline, but it is somehow tricky, because the Tail End is not going through
the nipping loop, as it happens in most similar eye knots - and that is what could had been, I think, the main reason
it has not been tied already - if it has not been tied already, of course.”

Note that Xarax had also submitted a double nipping loop version of the Ampersand
Bowline on the same day.

Page 57 of 59 Bowline Analysis Version 2.7a 16 July 2016 © Copyright Mark Gommers