In order to settle and trade with these islands from the Americas, an eastward maritime return path was necessary. The Trinidad, which tried this a few years later, failed. In 1529, Álvaro de Saavedra Cerón also tried sailing east from the Philippines, but could not find the eastward-blowing winds ("westerlies") across the Pacific. In 1543, Bernardo de la Torre also failed. In 1542, however, Juan Rodríguez Cabrillo helped pave the way by sailing north from Mexico to explore the Pacific coast, reaching as far north as the Russian River, just north of the 38th parallel. The frustration of these failures is shown in a letter sent in 1552 from Portuguese Goa by the Spanish missionary Francis Xavier to Simão Rodrigues asking that no more fleets attempt the New Spain–East Asia route, lest they be lost.