|Builders:||Thornycroft, Church Wharf, Chiswick|
|Preceded by:||Ferret class|
|Succeeded by:||Charger class|
|Type:||Torpedo boat destroyer|
|Displacement:||245 long tons (249 t) (light); 301 long tons (306 t) (full load)|
|Length:||201 ft 8 in (61.47 m) (overall); 201 ft 6 in (61.42 m) (waterline)|
|Beam:||19 ft (5.8 m) (overall)|
|Draught:||7 ft 3.25 in (2.2162 m)|
|Depth:||13 ft (4.0 m)|
|Complement:||52 (later 53)|
The three Ardent-class torpedo boat destroyers ("Thornycroft 27-knot (50 km/h) ") were ordered by the British Admiralty on 12 October 1893  and served with the Royal Navy. Built by Thornycroft for a contract price of £110,520 for all three vessels, they displaced 301 tons fully laden, and were 201 feet 8 inches (61.47 m) long overall.
The Ardent-class were derived from the preceding Daring class, but were larger and more powerfully engined. They were armed with one 12-pounder quick-firing gun forward and three 6-pounder guns, mounted on the broadside and aft, and three 18-inch torpedo tubes , one fixed in a bow mount and two on a revolving mount abaft the two funnels; the fixed bow tube was subsequently found to throw up too much spray and was removed very early in their careers, at which time two extra 6-pounder guns were installed en echelon amidships. They carried a complement of 2 officers and 50 ratings; one more was later added.
These three ship met the speed requirement of 27 knots for which they were designed. Over the measured mile and in three-hour trials they averaged the following power (ihp) and speed:
At her second preliminary trial, Ardent reached 29 knots with 407 r.p.m., the engines developing 5,044 ihp. However, Boxer was the fastest British destroyer among all the 27-knotters, her best run over the measured mile being 30¾ knots. In September 1913 the Admiralty re-classed all the remaining 27-knotter destroyers as 'A' Class; this applied to both Boxer and Bruiser, although the 'Ardent' herself had already been scrapped.
Vessels in class
|Ardent||John I. Thornycroft||297||£39,555||December 1893||16 October 1894||25 March 1895||Sold 10 October 1911|
|Boxer||John I. Thornycroft||298||£39,505||February 1894||28 November 1894||June 1895||Sunk in collision 8 February 1918|
|Bruiser||John I. Thornycroft||299||£39,406||April 1894||27 February 1895||June 1895||Sold 26 May 1914|
Media related to Ardent class destroyer at Wikimedia Commons
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