Located a couple of years back, sorry! Suits an older sloop.http://sydney.gumtree.com.au/c-Community-lost-and-found-Yacht-hatch-cover-Found-W0QQAdIdZ360117228
I would agree with it being from a Seawind 24 as that's what I thought it was when I first saw the pic. Seawind 24's are very prone to losing the anchor hatch.
Mk1 Seawind has the round nose and later Mk's appear to be cut square.
