Although much of
Florida's time was spent blockaded in Mobile, she made some forays into
Mississippi Sound, two of which alarmed the
United States Navy's entire Gulf command. On October 19,
Florida convoyed a merchantman outside. Fortunately for her, the coast was clear of
Union ships and batteries, for
Florida fouled the area's main military
telegraph line with her anchor, and had no sooner repaired the damage than she went aground for 36 hours. Luck returning, she tried out her guns on , "a large three-masted propeller" she mistook for the faster . Being of shallower draft and greater speed, she successfully dodged
Massachusetts in shoal water off
Ship Island. The havoc caused by one well-placed shot with her rifled pivot gun is described by
Commander Melancton Smith,
USN, commanding
Massachusetts; It entered the starboard side abaft the engine five feet above the water line, cutting entirely through 18 planks of the main deck, carried away the table, sofas, eight sections of iron steam pipe, and exploded in the stateroom on the port side, stripping the bulkheads of four rooms, and setting fire to the vessel ... 12 pieces of the fragments have been collected and weigh 58 pounds. The first sortie by
Florida caused consternation. Captain
Levin M. Powell, USN, in command at Ship Island — soon to be main advance base for the New Orleans campaign — wrote to
Flag Officer William McKean, October 22; The first of the reported gun steamers made her experimental trial trip on the Massachusetts, and, if she be a sample of the rest, you may perhaps consider that Ship Island and the adjacent waters will require a force of a special kind in order to hold them to our use. The caliber and long range of the rifled cannon from which the shell that exploded in the Massachusetts was fired established the ability of these fast steam gunboats to keep out of the range of all broadside guns, and enables them to disregard the armament or magnitude of all ships thus armed, or indeed any number of them, when sheltered by shoal water. Protecting
CSS Pamilico, in contrasting white dress and laden with some 400 troops, "the black rebel steamer"
Florida on December 4 had a brush with in Horn Island Pass that caused jubilation in the Southern press. Commander
T. Darrah Shaw of
Montgomery, finding his shell gun no match for
Florida's long-range rifles, signaled Commander Melancton Smith for assistance, and when it was not forthcoming, ran back to safety under the guns of Ship Island. Shaw saved
Montgomery and lost his command for fleeing from the enemy. Commodore McKean promptly sent Lieutenant
James Edward Jouett to relieve him and forwarded Shaw's action report to
United States Secretary of the Navy Gideon Welles, noting, "It needs no comment." Crowed
Richmond Dispatch on December 14, quoting
Mobile Evening News, "The
Florida fought at great disadvantage in one respect, owing to her steering apparatus being out of order, but showed a decided superiority in the effectiveness of her armament. That gun which scared the
Massachusetts so badly, and had nearly proved fatal to her, is evidently a better piece or must be better handled than any which the enemy have." ==Service as
Selma==