As the fleets reached Portland Bill on 23rd July, neither side gained a good wind position, and battle flared amidst much confusion. The Spanish made a vigorous attack on a group that had become separated from the English fleet, including the Triumph and Golden Lion. This engagement lasted for an hour and a half, until English backup arrived: both fleets can be seen here. Soon afterwards, Lord Howard of Effingham marshalled his ships to defend the Triumph and force the Spanish into a defensive formation: more fighting followed.
(John Pine's account of 1739)