During the summers from 2005 to 2007, the Viking Ship Museum reconstructed and built three boats from the Iron Age and Viking Age. Common to all three boats is that they all have a thin, hollowed-out log boat as their basic component, which is heated and softened over fire and then expanded out into a new hull form. In this book, archaeologist Ole Crumlin-Pedersen presents the archaeological background of expanded boats, while boat-builder Hanus Jensen describes how the three reconstructions were built. Both authors communicate their knowledge and experience with such passion, that we as readers get entirely swept up in their enthusiasm for this part of the Nordic clinker-built boat's history.