51* 24.727 North, 8* 32.866 West is the Position on the Wreck. Excuse the Stars, I couldn't find the little symbol on me keyboard. It also Happens to be 11.5 Miles from Brow Head and 11.75 Miles from Kinsale.
Gary Gentile, The Lusitania Controversies, Pg 301 Vol 2 (2 Vols). A great History of the Wreck and Good Autobiography
Diana Preston, Lusitania: An Epic Tragedy, Pg 376. Good Book.