The Mars-class ships of the line were a class of two 74-gun third rates of the large class ships of the line, designed for the Royal Navy by Sir John Henslow.
The two ships of the Mars class were the first large 74s since the of 1759, carrying the heavier armament of 24 pdrs on their upper decks, as opposed to the 18 pdrs of the middling and common classes.Winfield, pp. 36–37
Ships
Builder: Deptford Dockyard Ordered: 17 January 1788 Launched: 25 October 1794 Fate: Broken up, 1823
Builder: Woolwich Dockyard Ordered: 17 January 1788 Launched: 14 March 1797 Fate: Broken up, 1819
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