Thats what I remember reading johng
it was sunk with with a dozen or so other ships off newport the hassle was that they knew the wrecks were there but couldn't readilly indentify which was the endeavour.
Bit of history .to keep all you would be bidders off my case so I can get
this bargain on the cheap
http://www.nmm.ac.uk/server/show/nav.005001001
edit this was the article as such , wonder if they ever found out for sure
http://news.bbc.co.uk/2/hi/science/nature/4994614.stm