Page 5 - Mark Gommers "Bowlines Analysis

CONTENTS

What is a Bowline?.............................................................................. page 5
The anatomy of a standard Bowline………………………………… page 6
The anatomy of a Bowline on the bight…………………………….. page 7
Conventions used in this paper…………………………..……......... page 8
A rationale for depicting the ‘detail’ view of a Bowline…………… page 9
Terminology………………………………………………………… page 10
Tiable in the Bight (TIB)…………………………………………… page 12
Loops and turns…………………………………………………….. page 15
Orientations of a standard Bowline.................................................... page 16
What defines a Bowline? ................................................................... page 17
Structure of a standard Bowline………………………………......... page 18
Bowline family tree………………………………………………… page 19
The nipping loop…………………………………………………… page 20
Bowlines based on a single nipping loop………………................... page 21
Bowlines based on a double nipping loop……………….………… page 22
Bowlines based on a Clove hitch………………………………….. page 23
Bowlines based on a Girth hitch…………………………………… page 24
The collar…………………………………………………………... page 25
The Sheepshank……………………………………………………. page 26
The Capstan effect………………………………………………….. page 27
A theoretical analysis of forces acting on a Bowline…………........ page 28
Bowline structure under load……………………………………… page 29
Effect of load – stress and strain on the nipping loop………….….. page 30
Ring loading……………………………………………………….. page 31
Carrick loop……………………………………………………….. page 34
Lee Zep Bowline…………………………………………………... page 35
Complex collar structures (Myrtle)……………………………….. . page 36
Complex collar structures (Anti-Myrtle)…………………………... page 37
Anti Bowline………………………………………………………. page 38
Anti Bowline comparison to Myrtle………………………………. page 39
Carrick bend (transformed into corresponding eye knot)…………. page 40
Bowline on a bight.………………………………………………… page 41
Karash double eye knot.…………………………………………… page 41
Yosemite Bowline.……………………………………………........ page 45
Alan Lee Yosemite Bowline (variant)…………………………….. page 46
Lees Link Bowline.………………………………………………... page 47
Scotts simple lock Bowline.……………………………………….. page 47
Water Bowline (clove hitch)………………………………………. page 48
Double Bowline……………………………………………………. page 50
EBDB Bowline.…………………………………..……………….. page 50
EBSB Bowline.…………………………………..………………... page 51
Janus Bowline (double bight Bowline)……………..………….…. page 52
Girth hitch Bowline.…………………………………..………....... . page 53
Mirrored Bowline.…………………………………..……………... page 53
Scott’s woven Bowline.…………………………………………… page 54
Bowline on a bight.…………………………………..…..……....... page 55
Lee Zep Bowline…………………………………………………… page 56
Ampersand Bowline……………………………………………….. page 57
Conclusion…………………………………………………………. page 58

© Copyright Mark Gommers
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Page 4 of 59 Bowline Analysis Version 2.7a 16 July 2016 © Copyright Mark Gommers