Across coastal Norway facing the North Sea and Skagerrak, archaeologists have documented large clusters of Iron Age boathouses — some exceeding 20 meters in length. These structures, dated to roughly AD 180–540, predate the Viking Age by several centuries.Traditionally, such buildings were interpreted as markers of local military rivalries among regional chieftains. However, Stylegar believes this explanation is too narrow.The scale of the boathouses suggests vessels far larger than ordinary fishing boats. Their clustered arrangement resembles organized naval stations rather than scattered local facilities. As reported by Science Norway, Stylegar argues that these sites must be understood within a broader North Sea geopolitical framework — not merely as evidence of domestic conflict....A central pillar of the hypothesis involves contact with the Roman Empire. During the late 2nd and 3rd centuries, Scandinavians are known to have served as mercenaries in Roman forces. Archaeologist Dagfinn Skre, also cited by Science Norway, has proposed that participation in Roman military campaigns significantly reshaped Scandinavian society after around AD 180.Stylegar extends this argument to naval expertise. He suggests that men from coastal Norway may have served specifically in the Roman navy, gaining firsthand knowledge of fleet organization and maritime logistics at Roman naval bases in Britain and Gaul.Upon returning home, they could have adapted this knowledge to Scandinavian conditions. The structural parallels between Roman naval architecture and Norwegian boathouse clusters are, in his view, too striking to ignore.
The report goes on to speculate that the Roman-era reports of "Saxon" sea-pirates may have been using "Saxon" as a kind of generic term, in the way that Americans might conflate many different tribes under the heading of "Arab." Some of those "Arabs" might even be Kurds or Persians; making a careful differentiation as an outsider requires developing a lot of specialized knowledge. Over against that, Tacitus' Germania spells out many different kinds of "Germans," although perhaps he was one of the few who was able to make the distinctions clearly.
