HMS Llewellyn was a Laforey-class destroyer constructed for the Royal Navy, measuring approximately 268 feet 8 inches (81.89 meters) in length overall, with a beam of 27 feet 8 inches (8.43 meters) and a draught of 10 feet 6 inches (3.20 meters). Displacing around 965 long tons (980 tonnes) at normal load and up to 1,150 long tons (1,170 tonnes) at deep load, the vessel was powered by four Yarrow boilers feeding two Parsons steam turbines rated at 24,500 shaft horsepower, enabling a maximum speed of 29 knots (54 km/h). Its design included three funnels and carried 105 long tons (107 tonnes) of oil, providing a range of 1,720 nautical miles (3,190 km) at 15 knots, which could be increased in peacetime. The ship's armament comprised three QF 4-inch (102 mm) Mk IV guns, positioned on the forecastle, aft, and between the funnels, capable of firing shells weighing 31 pounds (14 kg). Additional weapons included one 7.7 mm Maxim gun, a 2-pounder "pom-pom" anti-aircraft gun, and two twin mounts for 21-inch (533 mm) torpedoes mounted aft. She also had capacity for four Vickers Elia Mk.4 mines, though this feature was never utilized. Laid down on 14 December 1912 by William Beardmore and Company at Dalmuir and launched on 30 October 1913, Llewellyn was originally named HMS Picton but was renamed in September 1913 to adhere to the Admiralty’s alphabetical destroyer class naming convention. She was commissioned into the Third Destroyer Flotilla, part of the Harwich Force, and participated actively in World War I. Notable engagements included the Battle of Heligoland Bight, anti-submarine patrols, and escort duties. During her service, she was involved in an unsuccessful attack on U-boat UB-18 and was torpedoed in the bow by German torpedo boat G87 while rescuing survivors from HMS Paragon, but she returned to port by steaming backwards. Following the war, Llewellyn was placed in reserve and was considered for sale to Finland, but the sale was halted by the Washington Naval Treaty. Ultimately, she was sold for scrap in March 1922, marking the end of her distinguished service.

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