|Ship image=File:Vroom Hendrick Cornelisz Battle between England and Spain 1601.jpg |Ship caption=São Martinho in combat with English ships, in a painting by Hendrik Cornelisz Vroom |module= |module2= }} São Martinho (meaning Saint Martin), built as a Portuguese Navy galleon, became the flagship of Duke of Medina Sedonia, commander-in-chief of the Spanish Armada.