The University of Maine unveiled the largest boat made by a 3D printer on Friday, and a Marine Corps official said the military branch plans to test the vessel for its war-fighting capabilities.

UMaine’s Advanced Structures and Composites Center pulled back the curtain on two new 3D-printed vessels Friday that it’s been working on in partnership with the U.S. Department of Defense and the Marine Corps. The boats could be used for other purposes but were designed as an option for the U.S. military to consider as it looks to diversify its arsenal. 

The two vessels — made with the world’s largest 3D printer, which is located at the composites center — can transport two shipping containers and a squad of Marines with up to three days of supplies.