On 08 Jun 1587 the English fleet commanded by Francis Drake (age 47) sighted a Portuguese carrack, the São Filipe, twenty leagues from the Island of São Miguel, returning from the Indies laden with treasure. After a brief exchange of fire it was captured, the first ship to be so on the return run from the Indies. Its enormous fortune of gold, spices, and silk was valued at £108,000 (of which 10% was to go to Francis Drake (age 47)); the fleet returned to England, arriving on 06 July 1587. The expedition led by Francis Drake (age 47) was a resounding military success: over one hundred Spanish vessels of different tonnages were destroyed or captured during the expedition. Economic and material losses caused to the Spanish fleet by the English attack ensured that Spanish plans for the invasion of England had to be postponed for over a year. It was not until Aug 1588 that the Armada was ready to leave for the British Isles.