The Cadmus class was a six-ship class of 10-gun screw steel sloops built for the Royal Navy between 1900 and 1903. This was the very last class of the Victorian Navy's multitude of sloops, gunvessels and gunboats to be constructed, and they followed the traditional pattern for 'colonial' small warships, with a full rig of sails. After them, the "Fisher Reforms" of the Navy ended the construction and deployment of this type of vessel. Most of the class survived until the 1920s, remaining on colonial stations during World War I.