I've just noticed this on the home page (nothing out of 10 for observation!)to shipwrecksuk.com. This is a great idea, as I only have the Shipwrecks volume dealing with Scotland (vol.4), and not being into diving I can't justify the cost of obtaining the whole series.
I see someone's also posted a link to pillboxesuk, which is another great site dealing with the anti-invasion network of 1940.
(Note to self...must keep up

)
Regards,Gordon
http://freewebs.com/thehistoryvault/