Well, I did not learn anything about shipbuilding at either bluff, but I did find the location of Nanna Hubba in the earlier posts that Hayes mentioned. I also learned that Commodore Ebenezer Farrand, in charge of Alabama's naval forces, agreed to surrender at Citronelle. The surrender document was signed at Sidney on 4 May 1865, and according to the stipulations therein, Commodore Farrand's designee, Lt. Julius Myers, surrendered at Nanna Hubba Bluff to Union Fleet Capt. Edward Simpson on the 10th of May 1865. Property surrendered included the Nashville, the Morgan, the Baltic, the Black Diamond, and the Southern Republic. Men paroled at the time included 112 officers, 285 enlisted men, and 24 marines. There is a partial list of these men in J. Thomas Scharf's History of the Confederate States Navy.