One of Seville’s limitations as a port was the shallowness of the Guadalquivir River; ships had to be sufficiently small and light to negotiate the narrow waterway to the Atlantic. Thus Magellan’s flagship, Trinidad, weighed 100 tons; San Antonio, which carried many of the provisions, weighed 120 tons; Concepción 90 tons, Victoria 85 tons; and Santiago, to be used for reconnaissance, weighed just 75 tons.
