Royal Oak-class ship of the line

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HMS Vengeance
Class overview
Name	Royal Oak
Operators	Royal Navy
Preceded by	Elizabeth class
Succeeded by	Culloden class
In service	13 November 1769 - 1818
Completed	6
General characteristics
Type	Ship of the line
Length	168 ft 6 in (51.4 m) (gundeck) 138 ft 2 in (42.1 m) (keel)
Beam	46 ft 9 in (14.2 m)
Propulsion	Sails
Armament	74 guns: Gundeck: 28 × 32 pdrs Upper gundeck: 28 × 18 pdrs Quarterdeck: 14 × 9 pdrs Forecastle: 4 × 9 pdrs
Notes	Ships in class include: Royal Oak, Conqueror, Bedford, Hector, Vengeance, Sultan

The Royal Oak-class ships of the line were a class of six 74-gun third rates, designed for the Royal Navy by Sir John Williams. The Alfred class were an enlarged version of the Royal Oak class.