CSS Sumter

CSS "Sumter, converted from the 1859-built merchant steamer Habana, was the first steam cruiser of the Confederate States Navy during the American Civil War. She operated as a commerce raider in the Caribbean and in the Atlantic Ocean against Union merchant shipping between July and December 1861, taking eighteen prizes, but was trapped in Gibraltar by Union Navy warships. Decommissioned, she was sold in 1862 to the British office of a Confederate merchant and renamed Gibraltar", successfully running the Union blockade in 1863 and surviving the war.
Construction and merchant service before the American Civil War.
The wood-hulled merchant steamship "Habana" was built in 1859 at the Philadelphia shipyard of Birely & Lynn for Captain James McConnell's New Orleans & Havana Steam Navigation Co. She was powered by a 400-horsepower steam engine made by Neafie, Levy & Co, also of Philadelphia, driving a single propeller and was also rigged for sail, generally described as bark rigged. She was variously reported to measure 499 or 520 gross registered tons, with a length overall of , beam of and a draft of . "Habana" was launched on 18 May 1859, performed well on trials and was considered a fast ship in subsequent mail service out of New Orleans. 
Confederate States Navy service.
"Habana" was purchased by the Confederate government at New Orleans in April 1861, converted to a cruiser and placed under the command of Raphael Semmes. Renamed "Sumter", she was commissioned into the Confederate States Navy on 3 June 1861 and broke through the Federal blockade of the Mississippi River mouth later that month.
Eluding the pursuing sloop-of-war , the pioneering Confederate Navy commerce raider captured eight U.S.-flagged merchant ships in waters near Cuba early in July 1861, then moved south to the Brazilian coast off Maranhão, where she took two more ships. Two additional merchantman fell to "Sumter" in September and October 1861. While coaling at Martinique in mid-November, she was blockaded by the Union sloop of war , but was able to escape to sea at night. "Sumter" captured another six ships from late November 1861 into January 1862 while cruising from the western hemisphere to European waters. Damaged during a severe Atlantic storm, she anchored at Cadiz, Spain on 4 January 1862, where she was allowed only to make necessary repairs without refueling, and was then forced to sail to British-held Gibraltar.
Unable to make more comprehensive repairs or purchase coal there, "Sumter" remained at anchor in Gibraltar watched by a succession of U.S. Navy warships, among them the sloop-of-war and the gunboat . Semmes and many of his officers were reassigned to the new cruiser , while most of the crew was paid off, leaving only a skeleton crew aboard her.
In October 1862, acting captain Midshipman William Andrews was shot dead in his quarters aboard the "Sumter" by acting master's mate Joseph Hester. Hester alleged that Andrews had planned to sail "Sumter" to Algeciras, Spain and surrender her to a U.S. Navy ship there. Hester was arrested by British authorities, and a coroner's jury returned a verdict of wilful murder. Hester's allegations of Andrews' supposed treachery was not corroborated by the rest of the crew.
Blockade runner "Gibraltar".
"Sumter" was disarmed and sold at auction on 19 December 1862 to the Liverpool office of Fraser, Trenholm and Company. "Sumter"'s sail plan was changed to a ship rig and she continued her service to the Confederacy under British colors as the blockade runner "Gibraltar".
Though her career as a warship had lasted barely six months, "Sumter" had taken eighteen prizes, of which she burned eight, and released or bonded nine; only one was recaptured. The diversion of Union warships to blockade her had been in itself of significant service to the Confederate cause.
As "Gibraltar", she ran at least once into Wilmington, North Carolina, under Capt. E. C. Reid, a Southerner. He sailed from Liverpool on 3 July 1863 with a pair of 22-ton Blakely rifles and other valuable munitions, returning with a full load of cotton. The beginning of this voyage is recorded only because the United States Consul in Liverpool passionately protested "Gibraltar"s being allowed to sail (ostensibly for Nassau), days before formal customs clearance: "She is one of the privileged class and not held down like other vessels to strict rules and made to conform to regulations." The arrival at Wilmington is also a matter of record because of the accidental sinking of the Confederate transport steamer "Sumter" by Confederate gunners at Fort Moultrie near Charleston in late August 1863. Until November 1863, U.S. naval intelligence understandably confused this ship with the former commerce raider.
The last official report of her appears to have been by the U.S. Consul at Liverpool on 10 July 1864: "The pirate "Sumter" (called "Gibraltar") is laid up at Birkenhead.". "Gibraltar" was sold at auction at Liverpool on orders from the U.S. Consul on 14 June 1866. She was purchased for £1,150 and based in Hull, East Riding of Yorkshire, employed in the Baltic trade. On 10 February 1867 she sprang a leak whilst on a voyage from Helsingborg, Sweden to Grimsby, Lincolnshire, and foundered on the Dogger Bank on 14 February 1867, with her crew being rescued by a fishing smack.
Sources.
See The Cornhill Magazine, No6 (Jy-Dec 1862) pp187–205: "The Cruise of the Confederate Ship 'Sumter': [From the Private Journal of an Officer]". A swaggering account, unsigned.