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

中文翻译：

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艾瑟尔科格（IJsselcog）项目：从挖掘到3D重建

15世纪的IJsselcog于2016年从坎彭（荷兰）附近的IJssel河上提起。从船尾到船头，从右舷到左舷，大约保留了70％的原始木制船体。模拟文档记录和摄影测量相结合的方法使研究团队能够以2D和3D形式重建原始船舶，然后对其航海特性进行全面研究。造船厂使用以前未知的嵌齿轮中的构造元素（例如威尔士和垂直骑乘者），使船体的体积和高度最大化。造船特性通常应用于16世纪和17世纪的拼砌货船。（C）2019作者