Earnest-class destroyer
 Six Earnest-class destroyers served with the Royal Navy: Earnest Griffon Locust Panther Seal and Wolf. These ships were all built by Cammell Laird and were part of the class of 'thirty knotters'.Concern about the higher speeds of foreign boats had prompted to Admiralty to order new destroyers capable of 30 knots (56 km/h) rather than the 27 knots (50 km/h) requirement which had been standard.