Treenailed boats were use used by viking in which centuries?
Treenailed boat The treenailed boat is a boat model used in Northern Europe, usually associated with Vikings but should perhaps be ascribed to Pomeranian groups. The shape and construction coincides with the sewn boats, but instead of ropes, it is assembled with wooden treenails.
Fembøring A fembøring is an open, clinker-built, wooden boat of the Nordland or Åfjord type, with similar proportions and appearance as smaller boats of the type (such as faerings). Fembørings traditionally are constructed of fir or pine, are rowed or sailed, and were used as fishing boats.