Looks interesting.

The first link given (http://www.cronab.demon.co.uk/) goes to a page that includes links to the home sites for:

Welcome to the Maritime History and Naval Heritage Web Site.
http://www.cronab.demon.co.uk/marit.htm

The World Ship Society
http://www.cronab.demon.co.uk/wss.htm

The Algerines Association
http://www.cronab.demon.co.uk/algerine.htm

The Liverpool Nautical Research Society is closely linked with Merseyside Maritime Museum.
http://www.cronab.demon.co.uk/lnrs.htm

The Association of Lighthouse Keepers and the international journal of Pharology LEADING LIGHTS
http://www.cronab.demon.co.uk/light.htm

I haven't tested these links: just a copy and paste from the one Naemanson posted. If mine don't work, just go to the originals.

The links all appear to be back to the same server where the first page is located. I didn't see an indication of whether this is the site owner's own collection(s) or if he's mirroring other organizations' sites here.

It looks like it may take a while to actually survey much of what's there either way.

John