Editing Knarr (keelboat) (section)

==Development==
The design's concept dates to before 1940, when Willy H. Johannesen and Lars Walløe contacted Kristofersen about designing a replacement for the [[Nordic Folkboat]], which was considered an ugly boat design in Norway. Kristofersen was approached due to having already designed other successful racing sailboats. With Norway [[Operation Weserübung|under German occupation]] in the [[Second World War]], work was slow and the design was not completed until 1943. The choice of iron for the keel was dictated by wartime restrictions making lead unobtainable.<ref name="Hist">{{cite web|url= http://www.knarr.no/?p=11|title= Knarrens historie|access-date= 15 November 2020|last= Hedal Haugerud|first=Morten|work= Norsk Knarrklubb|date= 7 May 2013|archive-url= https://web.archive.org/web/20201024004037/http://www.knarr.no/?p=11|archive-date= 24 October 2020|url-status= live}}</ref>

Work on the prototype started in 1944 at Einar Iversen's property in Grimsøy, near [[Sarpsborg]], which later grew into Grimsøykilen Boat Yard. The Germans imposed strict regulations on boatbuilding and sailing during the war, but Iversen was allowed to continue work, by promising the first boat to the Germans. He claimed that the prototype as completed was too flawed and promised the Germans the second one, which was constructed in the winter of 1944-45. The occupation of Norway ended before the German boat was delivered and the first production boats were delivered in 1946.<ref name="Hist"/>