Page 53, of Maxine Turner's excellent volume, NAVY GRAY: A STORY OF THE CONFEDERATE NAVY ON THE CHATTAHOOCHEE AND APALACHICOLA RIVERS, notes that Saffold was a "steamboat landing some 175 miles south of Columbus and 140 miles north of the port of Apalachicola."
Although Henry Putney Beers, in his guide volume to the archives of the Confederacy, indicates that no records of the Saffold Navy Yard have been found, it is quite possible to build up a small amount of documentation from the papers of officers and other personnel who were stationed there, such as lieutenant George Gift, Catesby ap R. Jones, etc. There is a muster roll of the CSS CHATTAHOOCHEE in the collections of the Naval Museum at Columbus, which is transcribed, with additional notes, at my web site.
Besides the volume mentioned above (NAVY GRAY), there was another, published in 1945, which included the texts of the letters of lieutenant Gift, written to his future wife. This book is titled HOPE BIDS ME ONWARD: BIOGRAPHY OF GEORGE GIFT ARRANGED BY HIS DAUGHTER FROM LETTERS GEORGE GIFT WROTE TO HER MOTHER BEFORE THEY MARRIED, (yes, I believe that is the full title!) by Harriet Gift Castlen. This may include additional data on Saffold Navy Yard.