The Bowline is one of the most useful knots in the world. You can create a loop at the end of a rope that won’t get tighter or looser. (bigger or smaller)
![bowline bowline](http://hstech.org/wp-content/uploads/rigging/bowline.jpg)
Create a large loop and then a small loop. The large loop is the loop you will use to hold onto your work/pipe/rigging. The small loop is for the knot.
![bowln1 bowln1](http://hstech.org/wp-content/uploads/rigging/bowln1.jpg)
Take the rope end and place up through the small loop.
![bowln2 bowln2](http://hstech.org/wp-content/uploads/rigging/bowln2.jpg)
Place the end around the long line.
![bowln3 bowln3](http://hstech.org/wp-content/uploads/rigging/bowln3.jpg)
The end goes back through the small lope.
![bowln4](http://hstech.org/wp-content/uploads/bowln4.jpg)
Grasp all the parts and tighten.
![bowln5 bowln5](http://hstech.org/wp-content/uploads/bowln5.jpg)
The finished knot.
![bowln6 bowln6](http://hstech.org/wp-content/uploads/bowln6.jpg)
One of the best things about a Bowline knot is that you can almost always loosen it. The easiest way is pull this loop down along the long line.
![bowln7](http://hstech.org/wp-content/uploads/bowln7.jpg)
Like so. Then the rest of the knot will come out.
![bowln8](http://hstech.org/wp-content/uploads/bowln8.jpg)