In this period of respite, the Spanish were able to refit and retool their navy, partly along English lines. The pride of the fleet were named "The Twelve Apostles"twelve massive new galleonsand the navy proved itself to be far more effective than it had been before 1588. A sophisticated convoy system and improved intelligence networks frustrated English naval attempts on the Spanish treasure fleet during the 1590s. This was best demonstrated by the repulse of the squadron that was led by Effingham in 1591 near the Azores, who had intended to ambush the treasure fleet. It was in this battle that the Spanish captured the English flagship, the "Revenge", after a stubborn resistance by its captain, Sir Richard Grenville. Throughout the 1590s, enormous convoy escorts enabled the Spanish to ship three times as much silver as in the previous decade.