Are the Celts the same as the Vikings? the Celts were very similar because they had long boats like vikings and they had the same battle strategy and they both know how to build things. the battle of the celts and vikings, vikings invade ireland and the celts had a war which was called Vikings and Irish at War. and Celts and vikings battle was so bloody that alot of soilders died the celts won the battle because they were experencised fighters that practice each other.