Re: What is the anchor rope "deck hole cover" called?
Well...
"Rope, called line when used aboard boats, is essential to outfitting your boat properly. When you shop for boating supplies and accessories, line should be at the top of your list. You will use it to tie your boat to the dock, to attach your anchor to keep your boat from drifting, to tie protective fenders when you are moored, and many more uses which include, but are not limited to, knot tying, splicing and more.
There are many different types and sizes of lines to match its many uses. Line is classified by whether it is natural or synthetic, it's construction and size. Each type of line excels at different uses aboard a boat."