HMS Mackay (D70 or I70) was a British destroyer that was laid down in March 1918, launched in December 1918, and commissioned with the Royal Navy in 1919. The total length of the ship at the time of launching was 101.4 m, width 9.68 m, and the displacement reached 1,830 tons. However, the maximum speed was around 36-37 knots. The ship's armament mainly consisted of: 5 120 mm guns, a single 76 mm anti-aircraft gun (AA) and 2 40 mm cannons.
HMS Mackay was the fifth of eight Admiralty-class ships, sometimes referred to as Scott, from the first of their type. Units of this type were conceived as the so-called destroyer flotilla leaders were therefore slightly larger than typical destroyers of the time, better armed, and above all had relatively large command and communication compartments and rooms. Overall, they turned out to be successful and solid ships. HMS Mackay, shortly after entering service, was sent to the Baltic Sea (1919), supporting the actions against the Bolsheviks in the civil war that was taking place in Russia at that time. In the 1920s and 1930s, it operated mainly in the Mediterranean. During World War II, he took an active part in Operation Dynamo, i.e. in the evacuation of the Allied forces from Dunkirk. In February 1942, however, he took part in an unsuccessful attempt to intercept German ships (Scharnhorst, Gneisenau and Prinz Eugen) making their way from Brest to German ports. In June 1944, in turn, he supported the Allied landing in Normandy. The unit survived World War II and was scrapped in 1949.