The title of the product entry (at Wargame Vault) is:
"Ironclads And Iron Protected Vessels Of The Confederate States Navy 1861 -1865"
If you search for "The Southern Iron Navy", as John has indicated,
(and which is the title on the book cover),
you will not find the book!
I had to expand the search to find it!
A direct link will help people find it:
https://www.wargamevault.com/product...0104_0_0_44510