Thinking decades ahead, the Navy has big plans for 3-D printing, like making human tissue on demand for medical emergencies, or custom-printing drones and missiles as a mission requires. For now, though, the printer is solving much simpler tasks, like lost caps and awkward funnels. From the Virginia Pilot Parts are designed with computers in the fabrication station, and printed to order right on board. It’s a pretty great solution to an ancient sailor’s problem. Watch a short video about it below: