HMS Derby was a Hunt-class minesweeper of the Aberdare sub-class, constructed for the Royal Navy during World War I. Although she was built during the wartime period, she was not completed in time to participate in the First World War. The Aberdare sub-class distinguished itself as an enlarged version of the original Hunt-class ships, with enhanced armament capabilities. The vessel displaced approximately 800 long tons (810 tons) at normal load and measured 231 feet (70.4 meters) in overall length, with a length between perpendiculars of 220 feet (67.1 meters). Her beam was 26 feet 6 inches (8.1 meters), and she had a draught of 7 feet 6 inches (2.3 meters). The ship's complement comprised around 74 officers and ratings. Powering HMS Derby were two vertical triple-expansion steam engines, each driving a single shaft, fueled by steam generated from two Yarrow boilers. These engines delivered a total of 2,200 indicated horsepower (1,600 kW), enabling a maximum speed of 16 knots (30 km/h; 18 mph). She carried a coal capacity of 185 long tons (188 tons), which provided a range of 1,500 nautical miles (2,800 km; 1,700 miles) at a cruising speed of 15 knots. Her armament included a quick-firing 4-inch (102 mm) gun positioned forward of the bridge, and a QF twelve-pounder (76.2 mm) anti-aircraft gun aft. Some ships of her class were fitted with alternative smaller-caliber guns. Initially, HMS Derby was equipped with two machine guns on the bridge wings. Over time, her armament was upgraded: the 4-inch gun was replaced by another twelve-pounder, and the machine guns were replaced with Oerlikon 20 mm cannons, with an additional pair of Oerlikons mounted later in the stern. Originally named Dawlish, she was renamed HMS Derby before launching to avoid confusion with coastal location names. She survived both World Wars and was eventually sold for scrap in 1946, marking her as a vessel of notable longevity and service in the Royal Navy’s mine warfare efforts.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.