Lifejacket. Tying a double bow.
After teaching safety stuff for nearly a decade I was challenged yesterday as to what constitutes a double bow, as required by our company to tie a lifejacket round the waist.
I've always assumed that a double bow is the simplest tie that you use for shoes whereby one tug on either straight section will release the lifejacket whereas the other opinion voiced was that a 'double' bow was the same knot I use plus another knot added on top to prevent the first knot coming undone.
Isn't the idea that the knot should be able to be untied even with cold hands?