HMS Victory is a 104-gun first-rate ship of the line of the Royal Navy laid down in 1759 and launched in 1765. She is best known for her role as Lord Nelson’s flagship at the Battle of Trafalgar on 21 October 1805.
In December 1758, Pitt the Elder, in his role as head of the British government, placed an order for the building of 12 ships, including a first-rate ship that would become Victory. During the 18th century, Victory was one of ten first-rate ships to be constructed. The outline plans were based on HMS Royal George which had been launched at Woolwich Dockyard in 1756, and the naval architect chosen to design the ship was Sir Thomas Slade who, at the time, was the Surveyor of the Navy. She was designed to carry at least 100 guns.
She additionally served as Keppel’s flagship at Ushant, Howe’s flagship at Cape Spartel, and Jervis’s flagship at Cape St Vincent. After 1824, she was relegated to the role of harbor ship.
In 1922, she was moved to a dry dock at Portsmouth, England, and preserved as a museum ship. She is the world’s oldest naval ship still in commission, with 244 years of service as of 2022.
Listed as part of the National Historic Fleet, Victory has been the flagship of the First Sea Lord since October 2012. Prior to this, she was the flagship of the Second Sea Lord. She is the oldest commissioned warship in the world and attracts around 350,000 visitors per year in her role as a museum ship.
According to wikipedia