Razzle Dazzle camouflage was used extensively in World War I. It consisted of complex patterns of geometric shapes in contrasting colours.
Unlike other forms of camouflage, the intention was not to conceal but to make it difficult to estimate a target's range, speed, and heading. It was intended primarily to mislead the enemy about a ship's course and so to take up a poor firing position.
This tactic and the use of the convoy system were attempts by the Admiralty to reduce shipping losses which were supported by local Member of Parliament, and Prime Minister, David Lloyd George.