 Complete the following phrase:  There were various attempts to create royal naval forces in the 15th century. James IV put the enterprise on a new footing, founding a harbour at Newhaven 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, but were sold after the 