The Cadmus class was a six-ship class of 10-gun screw steel sloops built at Sheerness Dockyard for the Royal Navy between 1900 and 1903. This was the 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. All of the class survived until the 1920s, remaining on colonial stations during World War I.

The Condor class was a six-ship class of 10-gun screw steel sloops built for the Royal Navy between 1898 and 1900. Condor foundered in a gale, prompting the Royal Navy to abandon sailing rigs for its ships; all the others in the class survived into the 1920s. The last of the class, Mutine, survived until 1932 as a Royal Naval Volunteer Reserve drill ship.