HMS Caesar was a Majestic-classpre-dreadnoughtbattleship of the Royal Navy, named after the Roman military and political leader Julius Caesar. The ship was built at the Portsmouth Dockyard, starting with her keel laying in March 1895. She was launched in September 1896 and was commissioned into the fleet in January 1898. She was armed with a main battery of four 12-inch (300 mm) guns and a secondary battery of twelve 6-inch (150 mm) guns. The ship had a top speed of 16 knots (30 km/h; 18 mph). Caesar served with the Mediterranean Fleet after a brief stint in the Channel Fleet. In 1905, she resumed service with a now re-organised Channel Fleet and was also part of the Atlantic Fleet for a time. In the service of the Home Fleet from 1907, she was placed in reserve in 1912. Following the outbreak of World War I, Caesar returned to the Channel Fleet before being transferred to the North America and West Indies Station in 1915 after a brief spell as a guard ship at Gibraltar. From 1918 to 1919 she served as a depot ship, firstly in the Mediterranean and Aegean Seas and then the Black Sea, in support of naval operations against the Bolsheviks. In this latter role, she was the last of the pre-dreadnought battleships to see service outside the United Kingdom. Returning to England in 1920, she was decommissioned and sold for scrap in 1921.