HMS M33 is a M29-class monitor of the Royal Navy built in 1915 as part of the rapid ship construction campaign following the outbreak of World War I. She became a mine-laying training ship in 1925 and was renamed HMS Minerva. In 1946 she became a floating office and was designated "Hulk C23". Put up for sale in 1984, she eventually passed to Hampshire County Council and is now located at Portsmouth Historic Dockyard, close to HMS Victory.
Sea - Military - Other