The ship is the sixth to carry the name Esmeralda. The first was the frigateEsmeralda captured from the Spanish at Callao, Peru, by Admiral Lord Thomas Cochrane of the Chilean Navy, in a bold incursion on the night of 5 November 1820. The second was the corvetteEsmeralda of the Chilean Navy, which, set against superior forces, fought until sunk with colors flying on 21 May 1879 at the Battle of Iquique. These events are considered significant milestones by the Chilean navy.
Construction began in Cádiz, Spain, in 1946. She was intended to become Spain’s national training ship. During her construction in 1947 the yard in which she was being built suffered catastrophic explosions, which damaged the ship and placed the yard on the brink of bankruptcy. Work on the ship was temporarily halted. In 1950 Chile and Spain entered into negotiations in which Spain offered to repay debts incurred to Chile as a result of the Spanish Civil War in the form of manufactured products, including the not yet completed Esmeralda. Chile accepted the offer, and the ship was formally transferred to the ownership of Chile in 1951. Work then continued on the ship. She was finally launched on 12 May 1953 before an audience of 5,000 people. She was christened by Mrs. Raquel Vicuña de Orrego using a bottle wrapped in the national colors of Spain and Chile. She was delivered as a four-masted topsail schooner to the Government of Chile on 15 June 1954, Captain Horacio Cornejo Tagle in command.
Her sister ship is the training ship for the Spanish Navy, the four-masted topsail schooner Juan Sebastián de Elcano. Sometime in the 1970s, Esmeralda’s rigging was changed to a four-masted barquentine by replacing the fore gaffsail by two main staysails. The third (top) main staysail is still in place. She has now five staysails, three gaff topsails, six jibs, three gaff sails, four square sails, 21 all in all.
Reports from Amnesty International, the US Senate and Chilean Truth and Reconciliation Commission describe the ship as a kind of floating jail and torture chamber for political prisoners of the Augusto Pinochet regime from 1973 to 1990. It is claimed that probably over a hundred persons were kept there at times and subjected to hideous treatment, among them British priest Michael Woodward, who later died as a result of torture. Due to this dark part of its history, the international voyages of the Esmeralda are often highly controversial – especially at the time when Pinochet was still in power but even after the restoration of Chilean democracy.