| Offley Malcolm Crewe-Read R.N. | Explanation | ||
| Date (from) | (Date to) | Personal | |
| No personal data. | |||
| Date | Rank | ||
| 9 November 1846 | Lieutenant | ||
| 14 September 1854 | Commander | ||
| Date from | Date to | Service | |
| 1854 | Lieutenant in Hecla, the Baltic during the Russian War | ||
| 24 August 1860 | Commander (2ic) in Cumberland, commanded by Charles Frederick Schomberg, guard ship of the steam reserve, Sheernes | ||
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