King James IV (1473-1513, reigned 1488-1513), put the enterprise on a new footing, founding a harbour at Newhaven, near Edinburgh and a dockyard at the Pools of Airth. He acquired a total of 38 ships including the Great Michael, at that time, the largest ship in Europe. Scottish ships had some success against privateers, accompanied the king on his expeditions in the islands and intervened in conflicts in Scandinavia and the Baltic Sea, but were sold after the Flodden campaign. Thereafter Scottish naval efforts would rely on privateering captains and hired merchantmen. Despite truces between England and Scotland there were periodic outbreaks of a guerre de course. James V built a new harbour at Burntisland in 1542. The chief use of naval power in his reign was a series of expeditions to the Isles and France.