He was born in Valencia, Venezuela, on May 5, 1892, within the home formed by Captain Eulogio Saldías and Clotilde Maninat, established in that country because of the Chilean invasion of Peru.
Returning to the mother country, he joined the Naval School in 1908 and graduated as a midshipman in 1912, and served as a transport agent for "Iquitos". Later it was commissioned to France to endow the armored cruiser "Commander Aguirre", returning in 1915. It occupied the captaincy of the port of Paita towards 1917; In April of that year was highlighted to the Station of Submersibles, managing to conform the flat major. In September 1920, as First Lieutenant, he was appointed assistant to the Chief of the American Naval Mission. In 1924, he was assigned to the British embassy on the occasion of the centenary of the Battle of Ayacucho. By then he was captain of Corvette.
In 1926 he was appointed head of administration of the squadron, and in 1932 commanded the transport "Rímac", bringing crew for the destroyers acquired in Estonia. A year earlier, he had been promoted to Frigate Captain. In 1934 returned to command the BAP "Admiral Grau".
Saldías contributed to the increase of national naval power with those destroyers (baptized "Castile", "Aguirre" and "Rodríguez"), besides two river gunships and the submarines class "Abtao". In addition to this, he was manager of several institutions related to the Navy, such as the Naval Medical Center, the Industrial Service of the Navy (SIMA), the Hydrography and Faros service, among others. He also held positions in public administration; Was, for example, Minister of Labor and Public Health in 1936, while the following year occupied the portfolio of Guerra and Marina was also minister of finance and Premier.
In 1938, as Captain of Ship, travels as part of a commission to the United States to realize studies in the naval academy of Annapolis. The product of these experiences is that on his return he undertakes his task of reorganization of the Navy, which is why he is considered one of the greatest architects of naval institutional modernization. He retired in 1956 as Vice Admiral, and died in Lima on May 16, 1974.