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|    HMS Neptune (centre) at the Battle of Trafalgar   | |
| Class overview | |
|---|---|
| Name | Neptune class | 
| Operators | |
| Preceded by | Boyne class | 
| Succeeded by | Boyne class | 
| In service | 28 January 1797–1857 | 
| Completed | 3 | 
| General characteristics | |
| Type | Ship of the line | 
| Length | 
  | 
| Beam | 51 ft (16 m) | 
| Propulsion | Sails | 
| Armament | 
  | 
| Notes | Ships in class include: Neptune, Temeraire, Dreadnought | 
The Neptune-class ships of the line were a class of three 98-gun second rates, designed for the Royal Navy by Sir John Henslow. All three of the ships in the class took part in the Battle of Trafalgar in 1805.