Crossroads in Ancient Shipbuilding. Proceedings of the Sixth International Symposium on Boat and Ship Archaeology, Roskilde 1991 No description specified. 1-5 (5 Records) Documents Computer Documentation and Analysis of Historic Ship Design (1994) A full scale replica of the Hanse Cog of 1380 (1994) Iron Nails in Iron Age and Medieval Shipbuilding (1994) The Kieler Hanse-Cog - a replica of the Bremen Cog (1994) Power and speed of oared ships (1994)