The battle of Femern took place on the 13 October 1644 between the Swedish and the Danish fleets. The battle is considered as one of the greatest victories in Swedish naval history. The Swedish ships were commanded by Carl Gustaf Wrangel. This is the second of two large pencil and ink wash drawings of the battle by van der Velde at Skokloster Castle. The first one depicts its initial stage, while this one focuses on the latter. To the left of the center is Wrangels flagship Smålands Lejon, and further to the left is the Danish vice admirals ship Lindormen set on fire.