>**What is the maximum known air speed of a dirigible vs. the lowest possible air speed for a [stealth] fighter?** Airship fastest speeds -------- According to [Guinness](http://www.guinnessworldrecords.com/world-records/fastest-speed-for-an-airship) the world record speed for an airship was 70 mph by Steve Fosset in 2004. Guinness also say > The large rigid airships built by the USA and Germany in the 1920s and 30s could reach higher speeds (up to 140 km/h or 87 mph according to some sources), but these were never officially measured to FAI standards. Stealth aircraft slowest speeds ------------------------------- The F-117 has a landing speed of 180 mph. The F-35B is stealthy and can hover.