| John Harrison Bowker R.N. | Explanation | ||
| Date (from) | (Date to) | Personal | |
| 1 January 1848 | Died | ||
| Date | Rank | ||
| May 1803 | Entered Navy | ||
| 7 February 1815 | Lieutenant | ||
| 17 January 1845 | Commander | ||
| Date from | Date to | Service | |
| 16 June 1841 | 1844 | Lieutenant and commander in Savage, Mediterranean | |
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