Tuhia he tomokanga mō tēnei wāhanga - I te tau 1427, i wikitoria te ope taua o te Kotahitanga o Kalmar i tētahi pakanga nui ki te Rōpū Hanseatic. 1 Hōngongoi 1677, he pakanga moana
i pā mai ki te moana i waenganui i tētahi waka Danish-Norwegian me tētahi waka Swedish iti ake te rahi. Ko te hua ko te wikitoria a Dano-Norwegian, i arahina e Admiral Niels Juel. I whawhai he pakanga kore i waenga i te ope Dano-Norwegian me Sweden i te tau 1710.