Page 23 - Mark Gommers "Bowlines Analysis

Bowlines based on a double nipping loop

The following structures are based on a double nipping loop.

The addition of a second nipping loop was thought to improve security – but with modern
climbing and abseiling ropes, this is not true. These structures are still vulnerable to cyclic
loading and slack shaking. Dan Lehman’s ‘EBDB’ is an improvement on the original
#1013 Double Bowline with the added benefit of 3 rope diameters within the nipping loop.

End Bound Double
Bowline (EBDB)
Based on #1013

Double Bowline
#1013

load

Double Bowline
#1013 load
(with tail tuck
through collar) Right hand
(Z twist)

Page 22 of 59 Bowline Analysis Version 2.7a 16 July 2016 © Copyright Mark Gommers