The Duke of Edinburgh-class cruiser was a class of two armoured cruisers built for the Royal Navy in the first decade of the 20th century. They were the first British armoured cruisers designed to work with the battlefleet rather than protect merchant shipping. After commissioning, they were assigned to the Atlantic, Channel and Home Fleets until 1913 when they were transferred to the Mediterranean Fleet. After the start of World War I in August 1914, the sister ships participated in the pursuit of the German battlecruiser SMS Goeben and light cruiser SMS Breslau. After the German ships reached their refuge in Ottoman Turkey, the ships were ordered to the Red Sea for convoy escort duties. They captured three German merchant ships before they returned to home at the end of the year.

HMS Black Prince was a Duke of Edinburgh-class armoured cruiser built for the Royal Navy in the early 1900s. She was stationed in the Mediterranean when the First World War began and participated in the pursuit of the German battlecruiser SMS Goeben and light cruiser SMS Breslau. After the German ships reached Ottoman waters, the ship was sent to the Red Sea in mid-August to protect troop convoys arriving from India and to search for German merchant ships. After capturing two ships, Black Prince was transferred to the Grand Fleet in December 1914. She was sunk on 1 June 1916 during the Battle of Jutland with the loss of all hands.