Even though the former Shogunate forces occupied Matsumae and Esashi, they wrecked the Kayo Maru Warship, the core of their forces, and in effect the navy deteriorated; they fought against the new government's forces at the Battle of Miyakowan Bay, but lost, allowing the government's forces to land at Ezochi.
旧幕府軍は松前、江差などを占領するも、要となる開陽丸を座礁沈没させて失い海軍へ兵力は低下、宮古湾海戦を挑んだものの敗れ、新政府軍の蝦夷地への上陸を許す。