The Japanese were copying the design of
HMS Argus
In November 1916, the ship's design was tested in a
wind tunnel by the
National Physical Laboratory to evaluate the turbulence caused by the twin islands and the bridge over them. They were found to cause problems, but no changes were made until the ship was nearly complete. In April 1918,
Argus was ordered to be modified to a
flush-decked configuration after the
sea trials of the carrier
Furious had revealed severe turbulence problems caused by her superstructure. The ship was given a bridge underneath her flight deck, extending from side to side, and she was fitted with a retractable
pilot house in the middle of the flight deck for use when not operating aircraft.
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