| http://www.w3.org/ns/prov#value | - Much of an airship???s weight is fixed (the dead weight of the ship???s structure and engines, and required weight such as crew and ballast) so the entire effect of the reduced lift of helium is absorbed by the ship???s payload; a helium-inflated airship therefore has a much lower payload for passengers and freight, and a much shorter range (because it can carry less fuel), than a hydrogen-inflate
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