I notice that some reviews complain that many of these versions are not very traditional, which I find to be a somewhat amusing concept because, frankly, I can't visualize pirates really fitting in with the sensitive politically-correct folkies. Most of these versions sound as if they were sung by drunken brawling guys set on plunder and pillage, and more than a few sound as if they wouldn't think twice about sticking matches in their hair and setting themselves on fire. So, in that respect, I think they sound pretty damned authentic. Plus, Tom Waits and Keith Richards are one of my favorite duos ever.
Son of Rogues Gallery
http://www.amazon.com/gp/product/B00BBNK7HQ/ref=sr_1_album_1_rd?ie=UTF8&child=B00BBNKBKE&qid=1361823985&sr=1-1
Son of Rogues Gallery
http://www.amazon.com/gp/product/B00BBNK7HQ/ref=sr_1_album_1_rd?ie=UTF8&child=B00BBNKBKE&qid=1361823985&sr=1-1