| 21. | Other types of rigid airships that are also sometimes referred to as zeppelins are not included.
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| 22. | Consortium Rigid Airship Design was established on 26 May 1998 but went bankrupt 1 August 2001.
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| 23. | The " Los Angeles " became the longest-serving rigid airship ever operated by the US Navy.
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| 24. | As a result, rigid airships are called zeppelins.
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| 25. | Although the disaster ended commercial travel on rigid airships, zeppelins lived on for three more years.
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| 26. | The "'23 class "'were rigid airships produced in the United Kingdom during the First World War.
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| 27. | How do Rigid airships ( e . g.
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| 28. | In 1944, NAS South Weymouth was the starting point for the first transatlantic crossings of non-rigid airships.
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| 29. | The United States Navy ( USN ) hoped to use the V-1710 in its rigid airships NA-73.
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| 30. | Actual construction then started of what was to be the first successful rigid airship, the Zeppelin LZ1.
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