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| Date from | Date to | Event | Source |
|---|---|---|---|
| 26.6.1748 | Succeeded as 7th Lord Forrester of Corstorphine | ref:952 | |
| 26.1.1749 | 1.12.1751 | Seahorse (24)
1748-1784 , Able Seaman ADM 107/4/361British 24 Gun 6th Rate Frigate | ADM 107/4 |
| 2.12.1751 | 10.4.1753 | Seahorse (24)
1748-1784 , Midshipman ADM 107/4/361British 24 Gun 6th Rate Frigate | ADM 107/4 |
| 11.4.1753 | 26.8.1754 | Crown (44)
1747-1770 , Midshipman ADM 107/4/361British 44 Gun 5th Rate Ship of the Line | ADM 107/4 |
| 24.10.1755 | 18.2.1756 | Enterprise (44)
1718-1771 , Midshipman ADM 107/4/361British 44 Gun 4th Rate Ship of the Line 1744 Renamed "Enterprise" | ADM 107/4 |
| 19.2.1756 | 3.5.1756 | Monarch (74)
1747-1760 , Midshipman ADM 107/4/361British 74 Gun 3rd Rate Ship of the Line | ADM 107/4 |
| 2.4.1756 | Lieutenant | CSORN | |
| 2.4.1756 | 12.5.1757 | Cambridge (80)
1755-1808 , Fourth Lieutenant ADM 6/18/250British 80 Gun 3rd Rate Ship of the Line | ADM 6/18 |
| 3.5.1756 | Passed the Lieutenant's Examination ADM 107/4/361 | RNLPC |