turbines, rated at , were intended to give a maximum speed of . During her sea trials at deep displacement, the ship reached from , below her designed speed at full load. Hawkins carried enough fuel oil and coal to give her a range of at . The main armament of the Hawkins-class ships consisted of seven Mk VI guns in single mounts protected by gun shields. They were arranged with five guns on the centreline, four of which were in superfiring pairs fore and aft of the superstructure, the fifth gun on the quarterdeck, and the last two as wing guns abreast the aft funnel. Their secondary armament consisted of ten 20 cwt guns. Six of these were in low-angle mounts, two in casemates between the forward 7.5-inch guns, another pair on platforms abreast the conning tower and the remaining guns on a platform between the funnels, although all the low-angle guns were removed in 1921. The last four served as anti-aircraft (AA) guns and were positioned around the base of the mainmast. The rest of their anti-aircraft suite consisted of a pair of 2-pounder () AA guns. The ships were also fitted with six 21-inch (533 mm) torpedo tubes, one submerged and two above water on each broadside. The guns of the first three Hawkins-class ships to be completed, , and Hawkins, were controlled by a mechanical Mark I Dreyer Fire-control Table. It used data provided by the coincidence rangefinder in the pedestal-type gunnery director positioned under the spotting top at the head of the tripod mast. The ships were also fitted with one and a rangefinder. The Hawkins class were protected by a full-length waterline armoured belt that covered most of the ships' sides. It was thickest over the boiler and engine rooms, ranging from thick. Their magazines were protected by an additional of armour. There was a 1-inch aft transverse bulkhead and the conning tower was protected by 3-inch armour plates. The ships' deck protection consisted of 1 to 1.5 inches of high-tensile steel. Construction and career Hawkins, named after Admiral Sir John Hawkins, one of the leaders of the fleet that defeated the Spanish Armada in 1588, has been the only ship of her name to serve in the Royal Navy. The ship was ordered in December 1915, laid down by HM Dockyard, Chatham on 3 June 1916, launched on 1 October 1917 and completed