| Navy | The Royal Navy |
| Type | Destroyer |
| Class | Admiralty Leader |
| Pennant | D 70 |
| Built by | Cammell Laird Shipyard (Birkenhead, U.K.) |
| Ordered | Apr, 1917 |
| Laid down | 5 Mar, 1918 |
| Launched | 21 Dec, 1918 |
| Commissioned | 19 May, 1919 |
| End service | |
| Loss position | |
| History | Mackay was coverted into a long-range escort at the outbreak f WWI with a reduced gun armament but carrying a complement of 50 DCs. In May 1940 she took part in the evacuation of Dukerque, in 2/1941 was with Capt Pizey's Division when it attempted attacking Scharnhorst & Gneisenau as they returned to Germany via the Channel but failed to get in range. Spent a short time escorting Russian convoy then switched to the East coast where she remained until the Normandy invasion. On 6/6/44 she was escorting one of the invasion convoys. Sold to be broken up for scrap on 18 February 1947. Commanding Officers: Cdr Graham Henry Stokes, RN Lt.Cdr. E. Adams, RN (retired) Capt. Thomas Edgar Halsey, DSO, RN Capt. John Piachaud Wright, DSO, RN Capt. Selwyn Victor Jephson, RN Cdr. Richard Frederick Jessel, RN Lt.Cdr. W.J. Courtlandt-Simpson, RN A/Cdr. Walter John Phipps, OBE, RN (retired) HMS Mackay is not listed in the October 1945 Navy List |
| Former name | HMS Claverhouse |
| Noteable events involving Mackay include: 17 Jan, 1940 |