Should I use a swivel on my anchor system which is 20ft of heavy chain and rope with a CQR 16kg which is pulled up with a capstan winch, I mainly anchor in 70+ feet depth.
The only recommendation that my surveyor made was to remove the swivel from the anchor chain...........
I had never worried about having one in the past but he should have more experience than me so it was removed. Still sticks to the bottom without it on the odd occasion.