Precursors of Scandinavian maritime activity

Timeline

1. 600–650West coast of Norway · NorwayIn the early 7th century, coastal Scandinavian tribes improved keel-ship design and combined sail and oar technology, enabling vessels to cross the stormy waters of the North Sea and Baltic; coastal fishing, hunting, and trading settlements multiplied, providing shipbuilding and navigational experience for later overseas raiding and colonization.
2. 650–675Salme · EstoniaThe two accompanying ships and remains of over forty Scandinavian warriors found at Salme show that by the mid-7th century northern tribal elites were organizing armed fleets for expeditions to Baltic islands, with maritime raiding and warrior culture beginning to develop alongside trade.
3. 670–700Ribe trading post · DenmarkSouthern Denmark and central Sweden became hubs for the exchange of amber, furs, and iron goods, with Scandinavian merchants penetrating Central Europe and the British Isles along coasts and rivers; by the late 7th century permanent trading posts such as Ribe had begun to appear, as maritime activity shifted from seasonal exchange toward an institutionalized network, paving the way for the Viking Age opened by the 793 raid on Lindisfarne.