HMS Slinger was an experimental cargo vessel operated by the Royal Navy during the First World War, constructed as a hopper barge by Lobnitz and Company, Limited of Renfrew, Scotland. Prior to her completion, she was acquired by the Navy and modified for military testing purposes. The ship was fitted with a 60-foot (18.25-meter) compressed air catapult, designed to serve as a test bed for shipborne aircraft launching technology. During 1917 and 1918, HMS Slinger was equipped to operate floatplanes, specifically Fairey Campania and Short 310 aircraft, demonstrating early experiments in naval aviation and aircraft deployment from ships. Her service with the Royal Navy was relatively brief; she was commissioned in 1917 and remained in naval service until 1919. She was officially sold on 16 October 1919, marking the end of her military career. After her sale, she was converted into a merchant cargo ship, reflecting a common postwar practice of repurposing military vessels for commercial use. Under her new owners, she was renamed SS Niki and registered under the Greek flag, entering commercial service in 1920 with Boyazides L, Brother & Company. In July 1920, the vessel arrived at Liverpool leaking and was subsequently beached at Tranmere, Cheshire. She was repaired and returned to service, continuing her career under Greek ownership with subsequent sales to Valsamakis & Company in 1934 and Nomikos Petros in 1937, maintaining Greek registry throughout. Later in 1937, she was sold to the British Finchley Steamship Company and renamed SS Lingfield. She operated as a cargo vessel until her sinking in 1941. On 17 October 1941, Lingfield collided with another vessel in the North Sea off the coast of Norfolk, England, and sank, marking the end of her maritime service. Her history illustrates the versatile use of early 20th-century ships, transitioning from experimental military platforms to commercial cargo carriers.

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