Kammala wannan jumla: A shekara ta 1675, bayan
Bayan nasarar Fehrbellin da kuma Brandenburg-Prussian ci gaba a cikin Swedish Pomerania a lokacin Scanian War, Frederick William ya yanke shawarar kafa rundunar sojan ruwa. Ya yi aiki da dan kasuwa dan kasar Holland da kuma mai jirgin ruwa Benjamin Raule a matsayin mai ba shi shawara, wanda bayan ganawar farko da Frederick William a 1675 ya zauna a Brandenburg a 1676 kuma ya zama babban mutum na Brandenburg-Prussia da ke tasowa da kuma mulkin mallaka. An kafa rundunar sojan ruwa ta Brandenburg-Prussian daga jirgi goma da Frederick William ya yi hayar daga Raule, kuma ya sami nasarorin farko a yakin da Sweden ke tallafawa kewaye da Stralsund da Stettin da mamayewar Rügen. A Pillau (yanzu Baltiysk) a gabar gabashin Prussia, Raule ya kafa tashar jiragen ruwa kuma ya faɗaɗa tashar jiragen ruwa.