FILE - In this Oct. 23, 2012 file photo, port workers walk past the three-masted ARA Libertad, a symbol of Argentina's navy, as it lies docked at the port in Tema, outside Accra, Ghana. Sailors aboard the navy sailing ship seized in a billion-dollar international debt controversy brandished weapons to block Ghanaian officials from moving the vessel to a less busy dock, an official of the Ghana Ports and Harbors Authority said Saturday, Nov. 10, 2012. (AP Photo/Gabriela Barnuevo, File)

Associated Press
FILE - In this Oct. 23, 2012 file photo, port workers walk past the three-masted ARA Libertad, a symbol of Argentina's navy, as it lies docked at the port in Tema, outside Accra, Ghana. Sailors aboard the navy sailing ship seized in a billion-dollar international debt controversy brandished weapons to block Ghanaian officials from moving the vessel to a less busy dock, an official of the Ghana Ports and Harbors Authority said Saturday, Nov. 10, 2012. (AP Photo/Gabriela Barnuevo, File)
FILE - In this Oct. 23, 2012 file photo, port workers walk past the three-masted ARA Libertad, a symbol of Argentina's navy, as it lies docked at the port in Tema, outside Accra, Ghana. Sailors aboard the navy sailing ship seized in a billion-dollar international debt controversy brandished weapons to block Ghanaian officials from moving the vessel to a less busy dock, an official of the Ghana Ports and Harbors Authority said Saturday, Nov. 10, 2012. (AP Photo/Gabriela Barnuevo, File)
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