The IJsselcog project: from excavation to 3D reconstruction

Wouter B. Waldus*, Joep F. Verweij, Henk M. van der Velde, Andre F. L. van Holk, Sander E. Vos

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review


The 15th-century IJsselcog was lifted in 2016 from the river IJssel near Kampen (the Netherlands). From stern to bow and from starboard to portside about 70% of the original wooden hull is preserved. The combined approach of analogue documentation and photogrammetry enabled the research team to reconstruct the original ship in 2D and 3D, followed by a comprehensive study of its nautical characteristics. The hull volume and height were maximized by the shipbuilders using previously unknown construction elements in cogs, such as wales and vertical riders; shipbuilding traits that are generally applied to 16th- and 17th-century carvel-built cargo ships. (C) 2019 The Authors

Original languageEnglish
Pages (from-to)466-494
Number of pages29
JournalInternational journal of nautical archaeology
Issue number2
Early online date7-Aug-2019
Publication statusPublished - Sep-2019


  • cog
  • cargo ships
  • underwater excavation
  • 3D recording and reconstruction
  • medieval Kampen (the Netherlands)
  • shipbuilding innovations

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