Question: Where did the fastest large cargo ship converted for the purpose of transporting slaves sail out of?

Context paragraphs:
USS Ryer (AG-138): USS "Ryer" (AG-138/AKL-9) was a Camano-class cargo ship constructed for the U.S. Army as the Freight and Supply Ship USA "FS-361" shortly before the end of World War II.  On delivery the ship was U.S. Coast Guard crewed and assigned to serve the Southwest Pacific area during the war.  The ship was acquired by the U.S. Navy in 1947, configured as a transport and cargo ship, named and was Commissioned, Miscellaneous Auxiliary, USS "Ryer" (AG-138), 8 June 1947 and reclassified Light Cargo Ship, (AKL-9), 31 March 1949.

SS Jacona (1918): SS "Jacona" was the first floating electric power plant.  This powership was a cargo ship converted to a mobile electric generator plant for emergencies.  It was used by the United States Navy during World War II and supplied electric power to South Korea on a temporary basis.

SS Brown Victory: The SS "Brown Victory" was a Victory-class cargo ship built during World War II under the Emergency Shipbuilding program.  The SS Brown Victory (MCV-712), was a type VC2-S-AP2 victory ship built by Oregon Shipbuilding Company Portland.  The Maritime Administration cargo ship was the 171th ship built.  Its keel was laid on February 25, 1945.  The ship was christened on May 2, 1945.  The SS "Brown Victory" was an armed cargo ship, named for Brown University one of 150 educational institutions that had Victory ships named after them.  She was commissioned February 23, 1945 at the Oregon Shipbuilding yards.  The 10,600 ton ship was the 171th Victory type ship constructed for the Maritime Commission.  She was operated by the Alaska Packers Company under the United States Merchant Marine act for the War Shipping Administration.

Algol-class vehicle cargo ship: The "Algol"-class vehicle cargo ships, also known as Fast Sealift Ships (FSS) or SL-7s, are currently the fastest cargo ships in the world, capable of speeds in excess of 33 kn .  Originally built in 1972 and 1973 as high-speed container ships known as SL-7's for Sea-Land Services, Inc., the ships' high operating costs limited their profitability.  All eight ships were acquired by the US Navy in 1981 and 1982, with the last ship converted, recommissioned and delivered to Military Sealift Command in 1986.  The conversion entailed the installation of four cranes, addition of roll on/roll off capability and a redesign of the cargo hold to better facilitate storage of vehicles.  Due largely to their high cost of operation, all fast sealift ships are kept in Reduced Operating Status, but can be activated and ready to sail in 96 hours.  All ships are named after bright stars in the night sky.

SS Middlebury Victory: The SS "Middlebury Victory" was a Victory-class cargo ship built during World War II.  The "Middlebury Victory" (MCV-726), was a type VC2-S-AP2 victory ship built by Permanente Metals Corporation, Yard 2, of Richmond, California.  The Maritime Administration cargo ship was the 726th ship built.  Her keel was laid on December 16, 1944.  The ship was christened on March 1, 1945.  SS "Middlebury Victory" was an armed cargo ship, named for Northeastern University in Boston one of 150 educational institutions that had Victory ships named after them.  She was built at the Oregon Shipbuilding yards in just 75 days, under the Emergency Shipbuilding program for World War II.  The 10,600 ton ship was constructed for the Maritime Commission.  She was operated by the General SS Company under the United States Merchant Marine act for the War Shipping Administration.

SS Bucknell Victory: The SS "Bucknell Victory" was a Victory-class cargo ship built during World War II.  The "Bucknell Victory" was a type VC2-S-AP2 victory ship built by Permanente Metals Corporation, Yard 2, of Richmond, California.  The Maritime Administration cargo ship was the 728th ship built.  Her keel was laid on December 27, 1944.  SS "Bucknell Victory" was an armed cargo ship, named for Bucknell University in Pennsylvania, one of 150 educational institutions that had Victory ships named after them.  She was built in just 70 days, under the Emergency Shipbuilding program for World War II.  The 10,600 ton ship was constructed for the Maritime Commission.

Slave ship: Slave ships were large cargo ships specially converted for the purpose of transporting slaves.

Sunny South (clipper): Sunny South, an extreme clipper, was the only full-sized sailing ship built by George Steers, and resembled his famous sailing yacht "America", with long sharp entrance lines and a slightly concave bow.  Initially, she sailed in the California and Brazil trades.  Sold in 1859 and renamed Emanuela (or Manuela), she was considered to be the fastest slaver sailing out of Havana.

USNS Clemson (T-AG-184): The SS "Lindenwood Victory" was a Victory-class cargo ship built during World War II.  The "Lindenwood Victory" was a type VC2-S-AP2 victory ship built by Permanente Metals Corporation, Yard 2, of Richmond, California.  The Maritime Administration cargo ship was the 766th ship built.  Her keel was laid on May 12, 1945.  SS "Lindenwood Victory" was an armed cargo ship She was built in just 70 days, under the Emergency Shipbuilding program for World War II.  SS "Lindenwood Victory" was an armed cargo ship, named for Lindenwood University in St. Charles, Missouri, one of 150 educational institutions that had Victory ships named after them.  The 10,600 ton ship was constructed for the Maritime Commission.

SS Northeastern Victory: The SS "Northeastern Victory" was a cargo ship built during World War II, under the Emergency Shipbuilding program.  The "Northeastern Victory" (MCV-735) was a type VC2-S-AP2 Victory ship built by Richmond Shipyards|Permanente Metals Corporation, Yard 2, of Richmond, California.  The cargo ship was the 703rd ship built.  The Ship was laid on March 28, 1945.  The ship was christened on June 30, 1945.  SS "Northeastern Victory" was an armed cargo ship named after a Northeastern University in Boston.  She was built at the Oregon Shipbuilding yards in just 96 days.  The 10,600-ton ship was constructed for the Maritime Commission.  The American-Hawaiian SS Company operated her under the United States Merchant Marine act for the War Shipping Administration.

Supporting paragraphs: Sunny South (clipper) Slave ship
Answer: Havana