Cheerful-class gunboat

A typical 'Crimea gunboat'
Class overview
Name	Cheerful class
Operators	Royal Navy
Preceded by	Albacore class
Succeeded by	Clown class
Built	1855
In commission	1855–1869
Completed	20
General characteristics [1]
Type	'Crimean' gunboat
Tons burthen	211 64⁄94 tons bm
Length	100 ft (30 m) (gundeck) 85 ft 5.5 in (26.048 m) (keel)
Beam	21 ft 10 in (6.65 m)
Draught	6 ft 6 in (1.98 m)
Depth of hold	6 ft 7 in (2.01 m)
Installed power	20 nominal horsepower (Onyx 92 ihp (69 kW))
Propulsion	1-cylinder horizontal direct-acting single-expansion steam engine Single screw
Speed	6.5 kn (12.0 km/h)
Crew	30
Armament	2 × 32-pounder SBML gun

The Cheerful-class gunboat was a class of twenty gunboats built for the Royal Navy in 1855 for use in the Crimean War.^[1]