HMS Ulster was a modified Admiralty R-class destroyer built for the Royal Navy, launched on 10 October 1917 and completed by 21 November of the same year. As a Member of the Modified R class, Ulster featured design enhancements from the original R class, notably incorporating elements from the Yarrow Later M class to improve operational capabilities in adverse weather conditions. The modifications included transposing and venting the forward two boilers through a single funnel, which allowed the bridge and forward gun to be positioned further aft, and hull strengthening to enhance high-speed performance in challenging sea states. The vessel measured 276 feet (84.1 meters) in overall length, with a beam of 27 feet (8.2 meters) and a draught of 11 feet (3.4 meters). Its displacement was approximately 1,035 long tons (1,052 tonnes) at normal load, increasing to 1,086 long tons (1,103 tonnes) at deep load. Propulsion was provided by three Yarrow boilers powering two Brown-Curtis geared steam turbines, rated at 27,000 shaft horsepower, enabling the ship to reach a top speed of 36 knots (67 km/h). Ulster was armed with three single 4-inch (102 mm) Mk V QF guns, one positioned on the forecastle, one aft on a raised platform, and one between the funnels, with increased elevation extending its range to 11,000 meters. Additionally, it carried a single 2-pounder (40 mm) "pom-pom" anti-aircraft gun and two twin torpedo mounts for 21-inch torpedoes. The crew complement was 82 officers and ratings, and the ship carried 296 long tons (301 tonnes) of fuel oil, giving it an operational range of 3,450 nautical miles at 15 knots. Ulster served with the Thirteenth Destroyer Flotilla of the Grand Fleet during World War I, participating in patrols and sorties, including a notable but unengaged sortie against the German High Seas Fleet in April 1918. Post-war, the destroyer was transferred to the Home Fleet and later placed in reserve by April 1920. It participated in annual reserve exercises until the Navy phased out older destroyers, and ultimately, Ulster was sold for scrap on 21 April 1928 to Thos. W. Ward of Pembroke Dock.

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