| Name | Forth (1833) | Explanation | |
| Type | Fifth rate | Type | Mortar frigate |
| Launched (Sail) | 1 August 1833 | Converted to screw | 21 January 1856 |
| Hull | Wooden | Length | 164 feet |
| Propulsion | Sail | ||
| Builders measure | 1215 tons | Builders measure (as screw) | 1215 tons |
| Displacement | 1792 tons | Displacement (as screw) | 1792 tons |
| Guns | 44 | Guns (as screw) | 2 |
| Fate | 1883 | Last in commission | 1856 |
| Class | Druid | Class (as screw) | |
| Ships book | |||
| Snippets concerning career prior to conversion | |||
| Date | Event | ||
| 1 August 1833 | Launched as 5th rate sailing ship at Pembroke Dockyard | ||
| 3 October 1845 - July 1847 | Comverted to frigate blockship at Devonport | ||
| 8 December 1855 - 23 October 1856 | Commanded (from commissioning) by Captain Lord John Hay, Devonport (and the 1856 Royal Naval review) | ||
| Career as unarmoured wooden screw vessel | |||
| Date | Event | ||
| 21 January 1856 | Undocked as screw mortar frigate at Devonport Dockyard | ||
| 1869 | Renamed Jupiter, coal depot, Devonport | ||
| 4 August 1883 | Sold to Castle for breaking up at Charlton | ||
| Extracts from the Times newspaper | |||
| Date | Extract | ||
| Fr 12 September 1845 | The Seahorse and Forth, 44-gun frigates, are ordered to be fitted as screw-propelled guard-ships for Devonport. | ||
| Fr 12 September 1845 | The Seahorse and Forth, 44-gun frigates, are ordered to be fitted as screw-propelled guard-ships for Devonport. The Forth was accordingly dismasted on Monday. | ||
| Ma 6 October 1845 | 3 October 1845 The Forth, 44, was docked at Devonport, to be fitted as a steam guard-ship at that port. | ||
| Th 13 September 1860 | The following ships and gunboats in the first-class steam reserve could be got ready for the pendant at a short notice:- The Windsor Castle, 100; the Revenge, 91; the Orlando, 60; the Forth, 12; the Seahorse, 12; the Merlin, 6; and the Hyena, the Gleaner, the Nightingale, the Steady, the Spider, the Delight, the Goldfinch, the Charon, and the Lark. The following, in Keyham steam yard, are in a forward state:- The Howe, 121; the Gibraltar, 101; the Brunswick, 80; the Phoebe, 51; the Narcissus, 51; the Jason, 21; and the Desperate, 8. | ||
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