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mads.xsd"><authority><topic authority="http://roble.intecca.uned.es/tematres/lem/">Navegación</topic></authority><related type="narrower"><topic>Cartas náuticas</topic></related><related type="narrower"><topic>Navegación costera</topic></related><related type="narrower"><topic>Navegación deportiva</topic></related><related type="narrower"><topic>Navegación interior</topic></related><related type="narrower"><topic>Naufragios</topic></related><related type="other"><topic>Meteorología marina</topic></related><related type="other"><topic>Astronomía náutica</topic></related><related type="other"><topic>Barcos</topic></related><related type="other"><topic>Satélites artificiales en navegación</topic></related><related type="other"><topic>Radionavegación</topic></related><related type="other"><topic>Transportes marítimos</topic></related><related type="other"><topic>Señales marítimas</topic></related><related type="other"><topic>Hidrografía</topic></related><related type="other"><topic>Derroteros</topic></related><related type="other"><topic>Sistema de Posicionamiento Global</topic></related><related type="other"><topic>Barcos-Pilotaje</topic></related><variant type="other"><topic>Náutica</topic></variant></mads>