Re: Does anyone know of a galvanized anchor swivel that will actually swivel?
No swivel here and I anchor over 300 days a year.
I have only had a twisted chain once and we were anchored in the same spot for over a couple of months.
Some anchor winches put some twist in the chain, which may be your problem.
If you do use a swivel make it a very good one and put a few links of chain between the anchor and the swivel. Even the good swivels are not very strong with a side load which is the usual failure mode. Chain between the anchor and swivel stops the possibility of a large side load.