CSS Florida, built at Greenpoint N. Y. in 1859, was thrice considered for a gunboat before she became one. Contrary to previous interpretation of the official records, closer comparison of entries reveals that she did not serve the Mississippi River Defense Fleet as originally intended but became a Government-owned blockade runner; most authors have confused her with the Mobilian CSS Florida who did not receive her name Selma (q.v.) until July 1862. CSS Florida of New Orleans was one of 14 steamers of Charles Morgan's Southern Steamship Co. which Maj. Gen. Mansfield Lovell "impressed for public service" at New Orleans, 15 January 1862, acting- on Secretary of War Benjamin's orders.

The colorful Lt. Beverly Kennon, CSN, had sought her command but had to be content with Governor Moore. He nostalgically described Florida to a court of inquiry as "a very fast and a very handsome vessel indeed….A direct-acting screw of about 100 horsepower…about the same size in all respects as the U.S. steam sloop Pocahontas.

Of the several ships of the same name, she apparently is the Florida who arrived at Havana 23 March 1862 with 1,000 bales of cotton. Attempting to repeat her success, she had loaded 211 bales in St. Joseph Bay near Pensacola when captured by Acting Master Elnathan Lewis with armed boats from US Bark Pursuit, 6 April.The boarders had just captured a sloop, Lafayette, at St. Andrew's, 20 miles below, and the latter's Captain Harrison volunteered to pilot Lewis' party on up to capture Florida. Surprised at 4 o'clock Sunday morning, Florida's crew were unable to fire their ship.

It later appeared that the pilot, chief mate, first and second engineers were Union sympathizers. Mr. Lewis, after running Florida aground twice and jettisoning 30 bales of cargo, found "it was impossible to bring her out without the assistance of the engineers, pilot, and mate; so rather than burn her he considered it prudent to bargain with them, and gave his word that they would receive $500.00 each. They were faithful."

In the 30-mile passage to the bar, Florida and Lafayette were almost recaptured by the Confederates on 8 April after Capt. R. L. Smith, CSA, and his company of dragoons had galloped 24 hours from Marianna, Fla. to intercept them off St. Andrew's. A ship's boat was ambushed with four casualties, one dead, but the prizes continued on to Key West. There, 19 April 1862, Commodore McKean reporting to Secretary Welles confirms that Florida had never been converted: "I have examined her, and find that her upper deck is too light to carry guns of any weight. I have not the means to strengthen her sufficiently, or I should retain and convert her into a gunboat." Despite this rejection, the U.S. Navy bought Florida from the Philadelphia prize court, 20 September, changed her name to Hendrick Hudson (q.v.) and placed 4, later 5, guns on board.