Rare Seven Years War Map, showing a naval battle on the Pomeranian Coastline.
The battle of Frisches Haff or battle of Neuwarp was a naval battle between Sweden and Prussia that took place September 11, 1759 as part of the ongoing Seven Years' War. The battle took place in the Oder Lagoon (Oderhaff) between Neuwarp and Usedom, and is named after an ambiguous earlier name for the Lagoon, Frisches Haff, which later exclusively denoted the Vistula Lagoon.
Swedish naval forces consisting of 28 vessels and 2,250 men under Captain Lieutenant Carl Rutensparre destroyed a Prussian force of 13 vessels and 700 men under Wilhelm von Carpelan. The consequence of the battle was that the small fleet Prussia had at its disposal ceased to exist. The loss of naval supremacy meant also that the Prussian positions at Usedom and Wollin became untenable and were occupied by Swedish troops.
Heiden's work focused on the various theaters of war and strategic points of interest during the Seven Years War between France and Great Britain.