sentences:  Grenville set sail for England aboard "Tiger" on August 25, 1585.Days later in Bermuda, Grenville raided a large Spanish galleon "Santa Maria de San Vicente", which had become separated from the rest of its fleet.The merchant ship, which Grenville took back to England as a prize, was loaded with enough treasure to make the entire Roanoke expedition profitable, spurring excitement in Queen Elizabeth's court about Raleigh's colonization efforts.