 Grafton and three of her sisters were transferred to the Western Approaches Command at Plymouth in October . The following month , however , the ship was reassigned at the end of the month to the 22nd Destroyer Flotilla in Harwich of the Nore Command for patrol and escort duties . On 10 January 1940 , she was transferred to the reconstituted 1st Destroyer Flotilla , also based at Harwich , where Grafton inspected ships travelling between German and Dutch ports for contraband . Between 26 March and 14 April the ship was given a brief overhaul in Hull in the shipyard of Brigham and Cowan . As the Norwegian Campaign had begun while Grafton was refitting , she was reassigned to the Home Fleet where she escorted convoys to Norway until 11 May . 
