HMS Wolsey number became G40 in June 1918; it was changed to D98 during the interwar period. Upon completion, "Wolsey" was assigned to the Grand Fleet, based at Scapa Flow in the Orkney Islands, in which she served for the rest of World War I. After the conclusion of World War I, "Wolsey" served in the Atlantic Fleet. In the late 1920s, she operated on the China Station. After the British river steamer SS "Kutwo" collided with and sank a Chinese troop-carrying launch on the Yangtze River and Chinese authorities threatened to seize her at Nanking in early March 1927, "Wolsey" arrived
Naval warfare of World War I Fleet defended the port of Sulina throughout the second half of 1916, causing the sinking of one German submarine. Its minelayer also defended the Danube Delta from inland, leading to the sinking of one Austro-Hungarian Danube monitor. (See also Romanian Black Sea Fleet during World War I) When Bulgaria entered World War I in 1915, its navy consisted mainly of a French-built torpedo gunboat called "Nadezhda" and six torpedo boats. It mainly engaged in mine warfare actions in the Black Sea against the Russian Black Sea Fleet and allowed the Germans to station two U-boats at Varna, one of which