HMS Agamemnon was a second-rate ship of the line built for the Royal Navy during the 1850s, representing the Agamemnon-class vessels designed in response to France's Napoléon-class battleships. Laid down at Woolwich Dockyard in November 1851 and launched on 22 May 1852, she was completed by February 1853. Originally ordered as an 80-gun second rate, her design was later revised to accommodate screw propulsion, and she was reclassified as a 91-gun ship during construction. Measuring 230 feet (70.1 meters) on the gundeck and with a keel length of 195 feet 2 inches (59.5 meters), Agamemnon had a beam of 55 feet 6 inches (16.9 meters) and a depth of hold of 24 feet 6 inches (7.5 meters). Her tonnage was approximately 310¼ tons burthen. Powered by a two-cylinder single-expansion steam engine built by John Penn and Sons, she produced 2,268 indicated horsepower, driving a single propeller and enabling her to reach speeds of 11.2 knots. Her steam machinery was supplemented by traditional sailing rig, making her a hybrid steam-sail vessel. Her armament comprised muzzle-loading, smoothbore guns, including thirty-four 8-inch shell guns on the lower gundeck, thirty-four 32-pounder guns on the upper gundeck, and an additional twenty-two 32-pounder guns and a single 68-pounder gun on the forecastle and quarterdeck. HMS Agamemnon served prominently during the Crimean War, notably as the flagship of Rear-Admiral Sir Edmund Lyons. Her combat actions included the bombardment of Sevastopol in October 1854 and the shelling of Fort Kinburn in 1855. During the Great Storm of 1854, she was driven ashore on the Russian coast of the Black Sea. After her active service, she was decommissioned and sold for scrap in May 1870. Her design and service record exemplify the transitional period of naval warfare, bridging traditional sail-powered ships and emerging steam-powered warships.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.