HMS Dwarf explained

Seven vessels of the Royal Navy have been named Dwarf:

• was a Decoy-class cutter. She participated in the capture of a French privateer, and in operations in the Gironde. After the end of the Napoleonic Wars she captured some smuggling vessels. She was wrecked in March 1824.
• was a cutter launched at Cowes. She performed dockyard service and then was transferred to the Coast Guard She was sold in 1862.
• was an iron screw vessel, the mercantile Mermaid that the Admiralty purchased in 1843. She was the Royal Navy's first screw vessel. She was sold in September 1853.
• was a wood screw launched at Blackwall. She was broke up in 1863 at Haslar.
• was a composite screw gunvessel launched at Woolwich in 1867. She was sold at Devonport in 1886.
• was the first to see service. She was broken up in 1926.
• was launched at Dartmouth as a submarine tender. She was hulked in 1963.