| James Harper R.N. | Explanation | ||
| Date (from) | (Date to) | Personal | |
| No personal data. | |||
| Date | Rank | ||
| 27 November 1805 | Entered Navy | ||
| 1 February 1815 | Lieutenant | ||
| Date from | Date to | Service | |
| 16 December 1843 | Lieutenant and commander in Experiment, Lake Huron | ||
| 1 August 1846 | Lieutenant and commander in Minos, Lake Erie | ||
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