The Laforey class was the improved and faster versions of the preceding Acasta class.[1] They displaced 965–1,010 long tons (980–1,026 t). The ships had an overall length of 268 feet 10 inches (81.9 m), a beam of 27 feet 8 inches (8.4 m) and a draught of 10 feet 6 inches (3.2 m). Loyal was powered by two Parsons direct-drive steam turbines, each driving one propeller shaft, using steam provided by four Yarrow boilers.[2] The turbines developed a total of 24,500 shaft horsepower (18,300 kW) and gave a maximum speed of 29 knots (54 km/h; 33 mph). The ships carried a maximum of 280 long tons (280 t) of fuel oil that gave them a range of 1,750 nautical miles (3,240 km; 2,010 mi) at 15 knots (28 km/h; 17 mph). The ships' complement was 74 officers and ratings.[3]
The ship was laid down as Orlando at William Denny and Brothers' Dumbarton shipyard on 16 September 1912.[4] The whole class was then renamed with names beginning with the letter "L" on 30 September 1913, with Orlando being renamed Loyal.[2]Loyal was launched on 11 November 1913 and completed in May 1914.[4]