UMaine Launches 3Dirigo X, a 3D Printed Boat Built for Offshore Speeds

The University of Maine took a 30-foot, high-performance boat from a computer model to the open water last week, and the entire hull came out of a large-format 3D printer. The vessel, called 3Dirigo X, rolled off the line at UMaine's Advanced Structures and Composites Center in Hampden and ran on-water demonstrations at speeds approaching 40 knots.

That matters because 3Dirigo X is not a lab curiosity. It is the first 3D-printed boat of its size designed to handle actual offshore conditions, not just prove a printer could hit a volume target. The original 3Dirigo, unveiled in 2019, earned three Guinness World Records for scale but was not built for speed or rough water. 3Dirigo X is a purpose-built follow-up with engineering to withstand Atlantic Ocean forces.

The print speed numbers show how fast this technology has moved. When UMaine started the research, the printer was laying down about 20 pounds of composite per hour. Today the system runs at roughly 500 pounds per hour. Faster print rates, better sensors, improved composite materials, and refined digital design all contributed to shorter production timelines.

Because the hull is printed from a digital file, changing the design does not require new molds. The same equipment can produce different shapes for commercial fishing boats, patrol craft, logistics vessels, or sensor platforms without retooling. That flexibility is the real selling point for defense and industry partners.

Federal and university leaders showed up for the launch, including Senator Susan Collins, who has backed the research since her first Senate visit to UMaine in 1997. The project ran through the Department of Defense's Accelerated Rapid Prototyping initiative, which ties the work to national security and manufacturing policy.

Habib Dagher, executive director of the Advanced Structures and Composites Center, said the launch is a milestone, not a finish line. More optimization is ahead for material properties and the manufacturing process itself. The next phase will test how the hull holds up to long-term stress in the Atlantic.

If the boat survives that evaluation, the implication is that large-format 3D printing is finally crossing from demonstration to production. Vessels that used to take months to tool could soon come off a printer in days, with custom shapes adjusted on the fly. For the Navy, coast guard, and commercial operators, that is a meaningful shift in how boats get built.