The progress of Ulloa’s small ships is…
December 1539 CE
The progress of Ulloa’s small ships is hampered by the fierce winds and high seas he encounters, eventually forcing him to turn back to New Spain.
The voyage eventually reaches 28 degrees north near the Isla de Cedros.
Ulloa’s discoveries lend support to the fact that Baja California is a peninsula.
According to Díaz del Castillo, Ulloa was stabbed to death by a sailor after his return in 1540.