Coordinating and optimizing the production of so many different products, is obviously a daunting task. The company has alrcady invested nearly $50 million in factary planning software to help manage this effort. But HHI's factory" encompasses square kilometers(4.2 square miles) stretching over land and sea, including nine drydocks, the largest of which spans more than seven football fields to support construction of four vessels simul taneously, over 12,000 workers build up to 30 ships at one time, using millions of parts ranging in size from small rivets to five-story buildings.