When he was 12, he entered the Navy Academy in Ferrol. In 1906, he got the rank of midshipman and was appointed to a coast guard vessel ('Numancia') and later to a battleship ('Pelayo'). In 1908, he was promoted to sub-lieutenant, being appointed to different ships. In 1909, he was raised to the rank of chief of Engineers and lieutenant- colonel in 1921. In 1921, he became director of the shipyard of the Spanish Society of Naval Construction of Cartagena. Six years later, he came back to Ferrol, where he stayed until 1934. Then he moved to Madrid, where he filled the office of chief inspector of the Naval Construction. After leaving prison for having taken part on a strike, he sought asylum in an embassy when the Civil War broke out. When the Civil War broke out, he sided with Franco and reentered the Navy again. During the first Franco's government and in the government of 1944 he was nominated as Minister of Industry and Trade. In 1941, he was the first director of the National Institute of Industry.
Suanzes wrote the work La industrialización de España en 1949 (Madrid, 1949).
In 1953, he became an honourable member of the Institute of Civil Engineers from Spain. In 1955, he got the gold medal to the work merit. In 1961, he got the Engineering prize of 'March' Foundation and one year later, he received the gold medal of Madrid for his activity in favour of the city when he was president of the National Institute of Industry. In 1964, he was granted 'Alfonso X the Wise' Cross. In 1976, he was conferred the title of 'Doctor Honoris Causa' in the Technical Superior School of Industrial Engineers at Madrid University.