| Name | Investigator (1848) | Explanation |
| Type | Discovery vessel |
| |
| Acquired | February 1848 |
| Hull | Wooden |
| Propulsion | Sail |
| Builders measure | 480 tons |
| Displacement | |
| Guns | |
| Fate | 1853 |
| Class | |
| Ships book | |
| Note | Abandoned in the Artic |
| Snippets concerning this vessels career |
| Date | Event |
| 28 February 1848 | Commanded by Captain Edward Joseph Bird, particular service, in search of Sir John Franklin, together with Enterprise (Captain James Clark Ross). |
18 December 1849 - 14 April 1854 | Commanded by Commander Robert John le Mesurier McClure, particular service, exploration of the North-West Passage by sailing east from the Bering Strait, until abandoned in the Prince of Wales Strait (returned home in North Star, William John Samuel Pullen, arriving 28 september 1854) |
| Extracts from the Times newspaper |
| Date | Extract |
| Sa 22 January 1853 | The Rattlesnake sloop, Commander Henry Trollope, is being coppered preparatory to her being put out of dock. The officers and crew are permitted to allot any part, or all, of their pay to whom they please after their departure from here. Iti s reported that the officers and crew are to have their double pay commence when they round Cape Hom, as in the case of the Plover, Investigator, and Enterprise. The destination of the Rattlesnake is Point Barrow. She will take in provisions and stores for three years. A few petty officers only are wanting now to complete her crew. |