| Clue | Source | Date |
|---|---|---|
| Circular tower as a fort for coastal defence | ||
| ___ tower, coastal defence (8) | ||
| Circular fort on coast (8) | ||
| Small circular fort used by Britain for coastal defence at the time of the Napoleonic Wars | Mirror Quiz | 14 Jul 2024 |
| Circular coastal tower (8) | ||
| Tower damage? Divulge nothing! | The Times Cryptic | 14 Sep 2022 |
| Damage to include a length of old coastal defence | The Times Cryptic | 23 Dec 2016 |
| Harm old count locked in tower | ||
| Circular, towerlike fort | ||
| Circular fort | ||
| Circular fort used in Corsica, 1794. |