INTRODUCTORY
The following extract from the Espejo de Navegantes, or Seamen's Glass, of Alonso de Chaves serves to show the development which naval tactics had reached at the dawn of the sailing epoch. The treatise was apparently never published. It was discovered by Captain Fernandez Duro, the well-known historian of the Spanish navy, amongst the manuscripts in the library of the Academy of History at Madrid. The exact date of its production is...
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