 The ship was ordered on 22 March 1929 from Palmer 's at <unk> , under the 1928 Naval Programme . She was laid down on 22 July 1929 , and launched on 11 June 1930 , as the fourth RN ship to carry this name . Boreas was completed on 21 February 1931 at a cost of £ 221 @,@ 156 , excluding items supplied by the Admiralty such as guns , ammunition and communications equipment . After her commissioning , she was assigned to the 4th Destroyer Flotilla with the Mediterranean Fleet until September 1936 when it was transferred to Home Fleet . Her service in the Mediterranean was uneventful until shortly before she returned home when Boreas evacuated civilians at the start of the Spanish Civil War in July 1936 . After a refit at Portsmouth that lasted until 26 September , she made multiple deployments off the coast of Spain in 1937 and 1938 . On 6 March 1938 , She rescued survivors of the torpedoed Nationalist heavy cruiser <unk> off Cartagena , Spain with the destroyer <unk> . Upon her return the following month , the ship began a refit at Portsmouth that lasted until 11 June . Boreas escorted the royal yacht Victoria and Albert during the Royal Tour of Scotland from 26 July to 4 August . The ship escorted the battleship Revenge and the ocean liner Aquitania in September during the Munich Crisis . She remained with the 4th Destroyer Flotilla until April 1939 . Boreas briefly served as a plane guard for the aircraft carriers of the Home Fleet later that year . 
