USS Macon (ZRS-5)
The USS Macon (ZRS-5) was a rigid airship built and operated by the United States Navy for scouting and served as a "flying aircraft carrier", designed to carry biplane parasite aircraft, five single-seat Curtiss F9C Sparrowhawk for scouting or two-seat Fleet N2Y-1 for training. In service for less than two years, in 1935 the Macon was damaged in a storm and lost off California's Big Sur coast, though most of the crew were saved. The wreckage is listed as the USS MaconAirship Remains on the U.S. National Register of Historic Places.
Less than 20 ft (6.1 m) shorter than Hindenburg, both the Macon and "sister ship" the USS Akron (ZRS-4) were among the largest flying objects in the world in terms of length and volume. Although the hydrogen-filled Hindenburg and the LZ 130 Graf Zeppelin II was longer, the two sisters still hold the world record for helium-filled airships.