Intrepid class ship of the line

HMS Diadem at the capture of the Cape of Good Hope
Class overview
Name:	Intrepid
Operators:	Royal Navy
Preceded by:	Ardent class
Succeeded by:	Worcester class
In service:	4 December 1770 - 1827
Completed:	15
Lost:	3
General characteristics
Type:	Ship of the line
Length:	159 ft 6 in (48.62 m) (gundeck) 131 ft 0 in (39.93 m) (keel)
Beam:	44 ft 4 in (13.51 m)
Depth of hold:	19 ft (5.8 m)
Propulsion:	Sails
Complement:	500 officers and men (491 from 1794)
Armament:	64 guns: Gundeck: 26 × 24 pounders Upper gundeck: 26 × 18 pdrs Quarterdeck: 10 × 4 pdrs Forecastle: 2 × 9 pdrs
Notes:	Ships in class include: Intrepid, Monmouth, Defiance, Nonsuch, Ruby, Vigilant, Eagle, America, Anson, Polyphemus, Magnanime, Sampson, Repulse, Diadem, Standard

The Intrepid-class ships of the line were a class of fifteen 64-gun third rates, designed for the Royal Navy by Sir John Williams. His design, approved on 18 December 1765, was slightly smaller than Sir Thomas Slade's contemporary Worcester class design of the same year, against which it was evaluated competitively. Following the prototype, four more ships were ordered in 1767–69, and a further ten between 1771 and 1779.