When the islands were conquered in the year of one thousand five hundred and seventy-four [_sic; sc_. 1564], the Spanish fleet sailed under command of the adelantado Miguel Lopez de Legaspi, from Puerto de la Navidad [258] situated in the South Sea, on the coast of Nueva Espana, in the province and district of Xalisco and Galicia, where resides the royal Audiencia of Guadalajara. A few later voyages were made also from the same port, until the point for the sending of these vessels was removed, for better and greater convenience, to the port of Acapulco, located farther south on the same coast, in sixteen and one-half degrees of latitude; it is eighty leguas from Mexico, and in its district. It is an excellent port, sheltered from all weather; and has a good entrance and good anchorages. Its vicinity is advantageous, being better provisioned and more populous than that of La Navidad. There a large Spanish colony has been established, with its alcalde-mayor, and royal officials who have charge of his Majesty's treasury; and these attend to the despatch of the vessels. The vessels that sail to the Filipinas, as they are despatched annually on his Majesty's account, must necessarily leave in the certain season of the brisas, which begin in the month of November and last until the end of March. This navigation should not be made at any other season, for from June the vendavals blow, and they are contrary to the voyage. As a rule, these ships sail and are despatched at the end of February, or at the latest by the twentieth of March. They sail west toward the islands of Las Velas, [259] otherwise called the Ladrones. The island of Guan, one of them, lies in thirteen degrees of latitude. Inasmuch as the vessels on leaving Acapulco are wont sometimes to encounter calms, they sail south from sixteen and one-half degrees, in which the port is situated, until they strike the brisas, which is generally at ten or eleven degrees. By this route they sail continually before the wind, and without changing the sails, with fresh and fair brisas, and in other moderate weather, for one thousand eight hundred leguas, without sighting any mainland or island. Then leaving to the south the Barbudos and other islands, and advancing gradually to a latitude of thirteen degrees, they sail until they sight the island of Guan; and above it, in fourteen degrees, that of La Carpana [Seypan]. This voyage to those Ladrones Islands lasts generally seventy days.