How to Thread-Lock Anchor Swivel ?

[AllezCat]

Originally Posted by sy_gilana

Allez Cat, its easy to stretch the last link to take a 5/8 Shackle. I could not believe how easy. All you need is a tapered pin, I think they call them BullPins in the USA. Anyway it looks like a ring sizing tool. I borrowed one and thought I would give it a few taps with a Ballpien hammer, just to see. I supported the chain on the back of the anchor, and 3 whacks later checked for fit, it was perfect. I was imagining 10-12 hard hits. If you cannot find one, its easy to find a machine shop and ask them to knock it up on a lathe. It needs to increase from chain dia (present) to pin dia (Desired) over about 3". Sailed a Catana 522 recently, She did not hunt at anchor too badly. The bridle was to the bow cleats, chainhook was well away, maybe 8m per leg, a large slack loop in the chain. I have seen cats twist and turn when the charter clients left them anchored by the windlass on the bridgedeck right in front of the mast, the chain rubbed all the way to 90deg. on the hulls. Charter clients thought is was normal...!!!

thanks for the info.
maybe a tapered tube swaging tool would work? Might try it...
I tried every trick I could think off and read about - nothing seems to make any difference on the "swinging". Another very experienced cruiser said "all catanas do that" so i live with it...I am adding bow padeyes (as I think they are a better way to bridle) and removing the outer helms - so may change the dynamics...
cheers