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stepping stones of maritime history

History

In 2014, a floor-timber of the wreck was accidentally brought to the surface by a fisherman, who reported the find to the State Archaeology Department of Schleswig-Holstein (ALSH). The wreck is situated in close proximity to the village of Fahrdorf near Schleswig at a shallow depth of ca. 2 metres. It was investigated between 2015-2017 under the auspices of the ALSH by students and divers of the Maritime Archaeology Programme at the University of Southern Denmark (SDU) and the Study Group for Maritime and Limnic Archaeology (AMLA: Arbeitsgruppe für Maritime und Limnische Archäologie) at the University of Kiel.

Due to the almost non-existent visibility in the Schlei fjord, the wreck was initially haptically assessed by divers. In later campaigns, carried out by AMLA, the wreck was surveyed by constructing a frame along which an underwater camera was moved over the wreck in very close distance to the wreck at a visibility of only 30-40 cm. The exercise was repeated in winter at a slightly better visibility. The underwater footage was converted into images, which were processed with a Structure-from-Motion (SfM) software to create a 3D-model of the wreck. Through this ground-breaking method, a model of the wreck was generated that was detailed enough to infer even details on a constructional level.

Description

The dendrochronological analysis indicates a cutting date between 1106 and 1121. The timber seems to be of local provenance.

The wreck has several characteristics diagnostic for the Nordic clinker-building tradition, like a bite-stanchion.

Status

The wreck shows signs of degredation caused by teredo navalis and other marine borers. Normally, teredo navalis cannot survive in the Schlei fjord due to the low salinity, but in the later summer months the salinity rises to critical levels, so there can be an influx of marine borers in rare occurences, which are not necessarily recent.

The site is also subject to a change due to erosion and sedimentation, so the state of preservation is monitored by the ALSH in cooperation with AMLA divers at regular intervals.

References

  • Enzmann, J., Jürgens, F., Wilkes, F. (2019).
    Der letzte Wikinger? Ein Wrack aus dem 12. Jh. bei Fahrdorf, Kr. Schleswig-Flensburg.
    Archäologie in Schleswig 17, 133–152.
  • D. Wilken, T. Wunderlich, H. Hollmann, M. Schwardt, W. Rabbel, C. Mohr, D. Schulte-Kortnack, O. Nakoinz, J. Enzmann, F. Jürgens, F. Wilkes (2019).
    Imaging a medieval shipwreck with the new PingPong 3D marine reflection seismic system.
    Archaeological Prospection 26.3, 211-223.
  • Enzmann, J., Jürgens, F., Wilkes, F. (forthcoming).
    The Fahrdorf wreck: another large 12th-century cargo ship in the Schlei, northern Germany.
    In: Open Sea … Closed Sea. Local and inter-regional traditions in shipbuilding (= Proceedings of the 15th International Symposium on Boat & Ship Archaeology), 211-216.
    Marseille.

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