During the excavation of a 9th/10th-century Frisian settlement on the island of Sylt, ship-timbers in secondary use were discovered in a well. They were recycled as part of the well-lining.

The four ship-timbers were frame elements and originated from a clinker-built vessel. The composition of floor-timber, bite, and bite knee is characteristic for the Nordic clinker tradition of the Viking Age.

The ship-timbers were typologically dated to the 9th-10th century.

The ship-timbers were documented and later conserved at the German Maritime Museum (Deutsches Schifffahrtsmuseum, Bremerhaven).

• Crumlin-Pedersen, O. (1997).
  Viking-Age Ships and Shipbuilding in Hedeby/Haithabu and Schleswig.
  Schleswig & Roskilde.
• Kossack, G. et al. (1975).
  Zehn Jahre Siedlungsforschung in Archsum auf Sylt.
  Bericht der Römisch-Germanischen Kommission 55 II.
  pp 261-377.
• Reichstein, J. (1975).
  Wikingerzeitliche Siedlungen an der Westküste.
  Die Heimat 82.
  pp 119-127.