During the victorious Battle of Oliwa against the Swedish fleet (28 November 1627) he commanded the Polish Navy in the galleonSankt Georg. The Poles captured the Swedish galleon Tigern and made another, Solen, to be scuttled by her crew, but Admiral Dickmann was killed onboard the Tigern, being shot by a cannonball through his legs. He received a state burial in Gdansk.