on East Coast convoy work, all the Type Is, the Type IIs Avon Vale, Blencathra and Liddesdale and the Type IIIs Bleasdale and Glaisdale were fitted with a single QF 2-pounder "bow chaser" gun for anti-E-boat work. Most Type IIIs later had their single Oerlikon guns replaced with twin powered mountings Mark V, and some had two single 40 mm Bofors guns added, one each forward of the wheelhouse and on the quarterdeck. Type I The first ten of the following were ordered on 21 March 1939, and the other ten on 11 April 1939. Three more were ordered on 4 September 1939 (see below) were intended to be of Type II, but were actually completed to the Type I design. Builder: Cammell Laird, Birkenhead Laid down: 8 June 1939 Launched: 12 December 1939 Completed: 23 March 1940 Fate: Paid off October 1945 and broken up 25 November 1957. Builder: Cammell Laird, Birkenhead Laid down: 8 June 1939 Launched: 29 January 1940 Completed: 6 June 1940 Fate: Bombed during the Dieppe Raid 19 August 1942. Builder: Yarrow, Scotstoun Laid down: 9 June 1939 Launched: 22 February 1940 Completed: 22 July 1940 Fate: paid off 26 March 1946, and broken up 2 July 1957. Builder: Yarrow, Scotstoun Laid down: 7 July 1939 Launched: 24 April 1940 Completed: 18 September 1940 Fate: Paid off September 1945; sold to be broken up 1957, but wrecked en route to the scrapyard. Builder: Vickers-Armstrong, Tyne Laid down: 8 June 1939 Launched: 28 December 1939 Completed: 28 August 1940 Fate: Paid off 1945 and broken up 28 May 1956. Builder: Vickers-Armstrong, Tyne Laid down: 8 June 1939 Launched: 25 January 1940 Completed: 1 November 1940 Fate: Sunk by E-boat S-30, off Lowestoft, 25 February 1941. Builder: John Brown & Company, Clydebank Laid down: 8 June 1939 Launched: 9 January 1940 Completed: 29 May 1940 Fate: Aircraft target ship August 1945 to 1947. Paid off 1947, and broken up 7 November 1956. Builder: John Brown & Company, Clydebank Laid down: 8 June 1939 Launched: 14 February 1940 Completed: 1 July 1940 Fate: Paid off December 1945 and broken up 15 August 1958. Builder: Swan Hunter, Wallsend Laid down: 8 June 1939 Launched: 12 December 1939 Completed: 8 June 1940 Fate: Paid off December 1945 and broken up 4 February 1958. Builder: Swan Hunter, Wallsend Laid down: 29 June 1939 Launched: 8 February 1940 Completed: 10 August 1940