The Battle in the Bay of Matanzas was a naval battle during the Eighty Years' War in which a Dutch squadron was able to defeat and capture a Spanish treasure fleet. In 1628, Admiral Piet Hein, with Witte de With as his flag captain, sailed out to capture the Spanish treasure fleet loaded with silver from their American colonies. With him was Admiral Hendrick Lonck and he was later joined by a squadron of Vice-Admiral Joost Banckert. Part of the Spanish fleet in Venezuela had been warned because a Dutch cabin boy had lost his way on Blanquilla and was captured, betraying the plan, but the other half from Mexico continued its voyage, unaware of the threat. Sixteen Spanish ships were intercepted; one galleon was taken after a surprise encounter during the night, nine smaller merchants were ta