Once known as Hartley18
Join Date: Aug 2007
Location: Melbourne, Australia
Thanked 65 Times in 65 Posts
Rep Power: 9
Denise, you didn't say how sheltered your anchorage is, but it's not improbable that your boat is riding over the chain if there is wind against tide. You'd have to sleep overnight to find out and then have a look when you hear grinding noises!
One solution is to slide a length of ~2" clear plastic tubing (the sort of cheap rubbish you get from hardware stores) over the chain for the first 15'-20' or so from your bow roller. To stop the "sleeve" sliding down the chain, use a cable tie through one of the links.
"Honestly, I don't know why seamen persist in getting wrecked in some of the outlandish places they do, when they can do it in a nice place like Fiji." -- John Caldwell, "Desperate Voyage"