Noah's Ark ark could contain all the animals in the world, argued that Moses, the traditional author of the book of Genesis, had been brought up in Egypt and would therefore have used the larger Egyptian cubit. He also fixed the shape of the ark as a truncated pyramid, square at its base, and tapering to a square peak one cubit on a side; it was not until the 12th century that it came to be thought of as a rectangular box with a sloping roof. Early Christian artists depicted Noah standing in a small box on the waves, symbolizing God saving
The Ark in Space was treated as a single six-part story to save money; "The Ark in Space" was filmed entirely in-studio, while "The Sontaran Experiment" was filmed entirely on location. "The Ark in Space" is the first broadcast story from Hinchcliffe as producer. Hinchcliffe believed that in order to expand the show's core audience, it was necessary to broaden the show's appeal to adults, and "Ark in Space" demonstrates this with its use of horror, particularly the inexorable transformation of Noah into an alien creature. A scene in which the half-transformed Noah begs Vira to kill him was deemed too scary for children