PLATE FLEET of 1715: The Treasure Fleet of 1715 consisted of 5 ships from Nueva Espana Flota, commanded by General Juan Esteban de Ubilla, 6 ships from Tierra Firma Flota, commanded by General Don Antonio de Echeverz y Zubiza, and the French Warship Grifon. The fleet sank off the east coast of Florida on or about July 31, 1715.