Indeed, it's not even the largest non-rigid. That goes to the US Navy's five ZPG-3W of the late 1950s, at 404 feet long and 1.5 million cubic feet volume. In

Indeed, it's not even the largest non-rigid. That goes to the US Navy's five ZPG-3W of the late 1950s, at 404 feet long and 1.5 million cubic feet volume. In comparison the Airlander is 302 feet and 1.34 million.