page_title: List of Parseval airships
section_title: PL 18 - No.4
hierarchical_section_title: List of Parseval airships / PL 18 - No.4
caption_attribution_description: Deutsch: Public domain aus der Jean-Pierre Lauwers-sammlung. English: Parseval PL 18 was built in Germany and delivered to the English Navy and designated "Parseval No.4". This photograph is from the Jean-Pierre Lauwers collection.
context_page_description: The Parsevals were 22 airships built between 1909 and 1919 by the Luft-Fahrzeug-Gesellschaft following the design of August von Parseval. In the 1920s and 1930s, three more airships were built following the Parseval-Naatz design.
  As with the rival Zeppelins, the airships were, in both English and German, referred to by the name of the inventor.
  In contrast to the Zeppelins, the Parsevals were non-rigid or semi-rigid airships, with little or no stiffening structure inside the fabric envelope. The Zeppelins had a rigid internal framework made of duralumin. Both types relied on hydrogen gas to provide lift.
context_section_description: Maiden flight: 23. April 1913
  1913 delivered to the Royal Navy, under the marking "Parseval No.4". The British would describe its service as very successful
  Length: 80 m; diameter: 15 m; volume: 8800 m³.
  Power plant: 2x 132 kW (180 PS) Maybach-engines, max speed 68 km/h,
  Crew: 2 officers and 7 men. Radio and Weaponry installed
  Served during the World War I as patrol ship, demobilised in July 1917
caption: PL 18 in 1913
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