This paper model is a Colonial Refinery Ship, a vessel used for refining tylium that has been used in the colonies since at least as far back as the First Cylon War, based on the American military sci-fi television series Battlestar Galactica, the papercraft was created by Steve.
During the war, they presumably had the role of replenishing the fuel reserves of Colonial Fleet ships. Over forty years later the class is used for civilian purposes. At least two of these ships, Daru Mozu and Hitei Kan, are able to escape with Galactica following the Fall of the Twelve Colonies. During the refugee fleet's ongoing escape from Cylon forces, these ships refine tylium mined by the vessels Monarch and Majahual. [Source: BS Wiki]
You can download this papercraft model template here: Battlestar Galactica - Colonial Refinery Ship Free Paper Model Download