 The teams had made considerable progress on both projects by the summer of 1937, with Gun Laying radar, Mk.I (GL) about to enter initial production, and the MRUs later taken over in 1938 by the RAF AMES Type 9.With this work starting to move from development to production, coincident with Bowen's astonishing anti-shipping demonstration, Butement began adapting Bowen's 1.5 m set for what became the Coast Defence radar (CD), allowing the Army's coastal artillery to aim their guns at night or in fog.