Ahead of the windlass can be seen the swivel we inserted into the system to try to get the anchor to come up toward the roller in the correct orientation. Doesn't always work and we may not keep it there but you can see, in the photo below, that the swivel is NOT attached directly to the anchor. I've lost count of the number of boats I've seen where swivels are attached in that way; despite the numerous accounts of the damage done to the swivel when an anchor, buried deep or caught on a rock is unable to move sideways and the forces splay the swivel side walls. We use a short length of 12mm (1/2")chain to connect the swivel to the anchor.
We had an "altercation" with someone on line recently who accused us of being massively over the top in terms of the weight of anchor (33kg) we use for the size of boat. Well perhaps in his terms we are; but then, unlike him, we don't have the safety net of a home - Hannah represents everything we own and the only insurance we have is for 3rd Party i.e. if we wreck your boat our insurance will cover your damage but ours is down to us. On top of this of course, Hannah is very heavy, not because she is a ferro hull but simply because this is our home and we live aboard on a full time basis. The 700 books (no exaggeration) 1,000+ paper charts, cast iron wood stove and all the provisions etc add up to a lot of weight. Although our fuel tank is small at 60 litres we carry an additional 180 litres or so in jerry cans. Likewise water. I do remember when we were last pulled out in the UK, we'd stripped the boat of most things, no books or charts for instance and both masts, booms, gaffs and all sails had been removed and we still weighed over 16 ton (35,000lbs or well over 16000 kgs) Add to all that weight the windage of two masts, served rigging, baggy wrinkles and 1500 feet of running rigging and Hannah adds up to a wonderful target for wind and waves when we're at anchor. So we use what we feel is the best insurance possible - a heavy anchor with a rock solid manual windlass. It may not appeal to everyone and, it seems, nothing brings forth the arm chair pundits as much as anchoring threads on forums but this works for us.