In the squadron of Guipuzcoa were ten galleons, under General Miguel de Oquendo.

In the squadron of Italy were ten ships, under General Martin de Bertendona.

In the squadron of Urcas, or store-ships, were twenty-three sail, under General Juan Gomez de Medina.

The squadron of tenders, caravels, and other vessels, numbered twenty-two sail, under General Antonio Hurtado de Mendoza.

The squadron of four galeasses was commanded by Don Hugo de Moncada.