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| Date from | Date to | Event | Source |
|---|---|---|---|
| 1744 | 1748 | HEIC Service | ADM 107/4 |
| 9.4.1755 | Passed the Lieutenant's Examination ADM 107/4/301 | RNLPC | |
| 3.5.1755 | Lieutenant ADM 6/18/221 | ADM 6/18 | |
| 1.8.1758 | Commander ADM 6/19/54 | CSORN | |
| 1.8.1758 | 31.7.1759 | Gramont (18), Commander and Commanding Officer ADM 6/19/54 Issued by The Hon. Edward Boscawen (1711-1761), North America Commission confirmed 6.4.1759 | BWAS-1714 |
| 1.8.1759 | 20.8.1759 | Terror (8), Commander and Commanding Officer ADM 6/19/118 | ADM 6/19 |
| 20.8.1759 | Captain ADM 6/19/95 | CSORN | |
| 20.8.1759 | 4.10.1759 | Namur (90), Captain and Commanding Officer ADM 6/19/95 Issued by The Hon. Edward Boscawen (1711-1761), North America Commission confirmed 19.9.1759 | ADM 6/19 |
| 8.11.1759 | 30.4.1761 | Panther (60), Captain and Commanding Officer ADM 6/19/110 | BWAS-1714 |
| 3.5.1761 | 18.7.1763 | Baleine (20), Captain and Commanding Officer ADM 6/20/62 Issued by Charles Steevens (1705-1761), East Indies Commission confirmed 15.12.1764 | BWAS-1714 |
| 18.7.1763 | 9.6.1767 | Argo (28), Captain and Commanding Officer ADM 6/20/216 Issued by Sir Samuel Cornish (1st Baronet of Sharnbrook) (1715-1770), East Indies Commission confirmed 6.10.1768 | BWAS-1714 |
| 29.10.1778 | 13.5.1781 | Triumph (74), Captain and Commanding Officer ADM 6/21/464 | BWAS-1714 |
| 15.5.1780 | Action of March 15 1780 | ||
| 19.5.1780 | Action of March 19 1780 | ||
| 12.5.1781 | Appointed First Captain ADM 6/22/342 to Admiral Rodney in the Leeward Islands. Confirmed 22.9.1781 | ADM 6/22 | |
| 2.10.1782 | 15.4.1783 | Triumph (74), Captain and Commanding Officer ADM 6/22/253 | BWAS-1714 |
| 15.4.1783 | 11.9.1784 | Triumph (74), Captain and Commanding Officer ADM 6/23/51 | ADM 6/23 |
| 24.9.1787 | Rear-Admiral of the Blue ADM 6/23/417 | CSORN | |
| 11.2.1789 | 1793 | Appointed Commander-in-Chief — Jamaica ADM 6/23/510 | ADM 6/23 |
| 22.3.1789 | 27.7.1792 | Centurion (50), as Flag Officer, Rear-Admiral of the Blue | BWAS-1714 |
| 21.9.1790 | Rear-Admiral of the White ADM 6/24/68 | CSORN | |
| 1.2.1793 | Vice-Admiral of the Blue ADM 6/24/201 | CSORN | |
| 26.4.1793 | 6.3.1795 | Appointed Lord Commissioner of the Admiralty | OHMB4 |
| 12.4.1794 | Vice-Admiral of the White ADM 6/25/30 | CSORN | |
| 4.7.1794 | Vice-Admiral of the Red ADM 6/25/55 | CSORN | |
| 1.6.1795 | Admiral of the Blue ADM 6/25/179 | CSORN | |
| 24.12.1798 | c.10.9.1799 | Canopus (80), as Flag Officer, Admiral of the Blue | BWAS-1793 |
| 14.2.1799 | Admiral of the White | CSORN |
Had sailed for the East India Company before joining the Royal Navy
He is the younger brother of Sir Edmund Affleck who was born in April 1725, but his passing certificate states he was 34 in 1755.