HMS Dwarf (1843)

[2] The British Admiralty purchased Mermaid from J. and G. Rennie, Holland Street, Blackfriars, on 22 June 1843,[3][4] according to Sir George Cockburn's advice, and on the condition that she should steam 12 miles per hour (19 km/h) (7 March 1842).

[3] Lieutenant Osborne, when in command of Dwarf on the coast of Ireland in 1848, fitting out in the Portsmouth Basin, heard the cry of "a boy overboard," he immediately plunged in with his full uniform on, including his sword, and saved the boy.

A first-class certificate was awarded, and he was strongly recommended to the Parent Society in London.

[9] Dwarf, while moored in Kingstown Harbour, Ireland, sent an armed boat's crew to Ann Kenney and captured an unrecognised emerald silk flag.

[10] On 26 September 1849, she was run down by and collided with HMS Trident in the Atlantic Ocean 60 nautical miles (110 km) southeast of the Old Head of Kinsale, County Cork.