The turbines developed a total of 34,000 shaft horsepower (25,000 kW) and were intended to give a maximum speed of 35.5 knots (65.7 km/h; 40.9 mph).

[2] The ships carried enough fuel oil to give them a range of 5,500 nautical miles (10,200 km; 6,300 mi) at 15 knots (28 km/h; 17 mph).

[7] In the Second World War, Intrepid attacked and sank the U-45 south-west of Ireland on 14 October 1939 in company with the destroyers Ivanhoe and Inglefield.

During naval manoeuvres on the 17 March 1940 Intrepid collided with the Leith-based fishing trawler MV Ocean Drift, sinking the smaller ship and killing two of her crew but rescuing the other eight[8] Intrepid participated in the pursuit and destruction of the German battleship Bismarck in May 1941, and in Operation Pedestal, the escorting of a convoy to Malta in August 1942.

[9] Intrepid was attacked by German Junkers Ju 88 aircraft and sank in Leros harbour in the Aegean Sea on 26 September 1943.