| Name | Alligator (1821) | Explanation | |
| Type | Sixth rate | ||
| Launched | 29 March 1821 | ||
| Hull | Wooden | ||
| Propulsion | Sail | ||
| Builders measure | 500 tons | ||
| Displacement | |||
| Guns | 28 | ||
| Fate | 1865 | ||
| Class | Atholl | ||
| Ships book | |||
| Note | 1841 d.s. 1842 troopship. 1846 hospital ship | ||
| Snippets concerning this vessels career | |||
| Date | Event | ||
| 8 November 1825 - 3 January 1827 | Commanded by Captain Henry Ducie Chads, East Indies | ||
| 20 November 1828 - 1831 | Commanded by Captain Charles Philip Yorke, Mediterranean | ||
| 28 September 1831 - 27 August 1835 | Commanded (from commissioning until paying off) by Captain George Robert Lambert, East Indies | ||
| 6 August 1837 - 30 November 1839 | Commanded by Captain James John Gordon Bremer, Australia (founding the settlement at Port Essington) | ||
| (1840) | Commanded by Acting Captain Patrick John Blake, during the first Anglo-Chinese war | ||
| 4 March 1840 - 7 June 1841 | Commanded by Acting Captain Augustus Leopold Kuper, East Indies (including the first Anglo-Chinese war) | ||
| 8 June 1841 - 14 June 1841 | Commanded by Captain Augustus Leopold Kuper, East Indies (including the first Anglo-Chinese war) | ||
| 15 June 1841 - 6 August 1842 | Commanded by Acting Captain Samuel Perkins Pritchard, East Indies (including the first Anglo-Chinese war) | ||
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