HMS Agamemnon was a British battleship, the so-called pre-dreadnought or pre-dreadnought, from the period of World War I and the period preceding it. The keel for the ship was laid in 1905, the launch took place in 1906, and the entry into service with the Royal Navy - in June 1908. The length of the ship was 135.2 m, width 24.2 m, and her displacement was about 17,900 tons. The maximum speed is approx. 18 knots. The ship was armed with 4 305 mm guns, and the auxiliary armament included, among others: 10 234 mm guns and 5 450 mm torpedo tubes.
HMS Agamemnon was the second and last unit of the Lord Nelson class of battleships. This class also turned out to be the last class of pre-dreadnought battleships in the Royal Navy, as HMS Dreadnought was being built simultaneously with it, which turned out to be a revolution in the field of shipbuilding. HMS Agamemnon, upon entering service, was assigned to the Home Fleet, where he remained in the years 1908-1914. At the outbreak of World War I, it was navigated to the waters of the English Channel, with the port in Portland, in order to cover British troops transports bound for France. In February 1915, he was assigned to participate in the Dardanelles operation, which brought him to the Mediterranean Sea. She performed tasks related to the activities on the Dardanelles until their end in January 1916. Then, until the end of the war, it remained in the Mediterranean, based primarily in the Greek port of Mudros. In November 1918 he was sent to today's Istanbul. The ship was decommissioned in March 1919, and from 1921 she served as a target ship. In 1927, HMS Agamemnon was sold for scrap.