On February 25, 1607, Velasco hijo was again named viceroy of New Spain, this time by the new king,
Philip III. He took possession of the government on July 2. Immediately he took up a project to dig the Huehuetoca canal, for flood control. Heretofore during the rainy season, year after year, Mexico City had been flooded. The canal project was under the direction of
Enrico Martínez, an engineer, and Juan Sánchez, a mathematician of the
Society of Jesus. Work on the canal commenced on November 28, 1607. In February 1609 a royal edict arrived in Mexico prohibiting once again the enslavement of the Indians. Velasco hijo rigorously enforced this decree against the encomenderos and the mineowners. Like his father, this viceroy was known as a defender of the Indians. Also in 1609 rumors of an impending rebellion of
Negroes circulated. Velasco took preventative measures, including sending an armed force under Captain
Pedro González de Herrera to Puebla. Herrera was to combat the escaped slaves and rebels (
Maroons) on the Rio Blanco, who preyed on travelers between Veracruz and Mexico City. The leader of the blacks,
Gaspar Yanga, sent a letter to Captain Herrera. The letter outlined the mistreatment of the blacks that had led them to flee captivity. Velasco took cognizance of the letter, but not before a bloody battle was fought, with heavy losses on each side. Velasco then arranged for the escaped slaves to found their own village,
San Lorenzo de los Negros, near
Córdova.
Contacts with Japan 's portrait during his embassy to
New Spain and
Europe, by
Claude Deruet,
Coll. Borghese,
Rome. Luis de Velasco was involved in the establishment of trade and diplomatic relations with Japan. He received in 1610 the embassy of
Luis Sotelo and
Tanaka Shōsuke, which had sailed from Japan on the Japanese sailship
San Buena Ventura, and agreed to send an ambassador to Japan in the person of the famous explorer
Sebastián Vizcaíno, with the added mission of exploring the "gold and silver islands" which were thought to be east of the Japanese isles. Luis de Velasco confiscated the Japanese ship, fearful that the Japanese would further master the technique of trans-oceanic voyages. Vizcaíno sailed from Acapulco in the
San Bernardo on March 22, 1611, with the emissaries from Japan, arriving in
Uraga on June 16 of that year. From there he traveled to Edo to meet the second
shōgun Hidetada, and thence to Sumpa to meet with ex-
shōgun Ieyasu. Vizcaíno, having lost his ship, sailed from Japan October 28, 1613, on board the Japanese
galleon San Juan Bautista and arrived back at Acapulco on January 25, 1614. He was accompanied by
Hasekura Tsunenaga, designated as the Japanese ambassador to Spain, and about 140 other Japanese. ==Council of the Indies==