Elizabeth City is also home to one of the United States' few airship factories. Many of the nation's commercial blimps are made and serviced here. The current airship facilities evolved from what had previously been Naval Air Station Weeksville, operational from 1941 to 1957. NAS Weeksville's LTA craft played a vital role in German U-boat spotting during World War II, helping to minimize losses to East Coast shipping. NAS Weeksville was home to two hangars, one still existing as corrugated steel, and a slightly larger one constructed out of Southern Yellow Pine, to conserve metal for the WWII war effort. This latter hangar was the largest wooden structure in the world until its demise by fire in 1995.