Руфиджи
"Mersey" had a relatively successful career in the First World War and had two prominent incidents. At the Battle of the Yser in 1914, off the coast of Belgium, she bombarded German troops as well as artillery positions. In July 1915, she was towed to the Rufiji River delta in German East Africa, where she and "Severn" then assisted in the destruction of the German light cruiser .