Navy rating system- The system classed ships as 1st, 2nd, 3rd or 4th rate depending on their guns and manpower. 1st and 2nd rate ships had 3 gun decks and around 100 cannons. The extra firepower made them top heavy and hard to manoeuvre so few were built. 4th rate ships had less than 64 cannons and were phased out due to their lacking firepower. 3rd rate ships made up most fleets with around 70 guns, 2 gun decks and 500 men. They were 76% of the Navy fleet in 1794.