All changes to tower
| Date | Change | Source |
|---|---|---|
| 20 Aug 2022 | Overhaul added | Bowell's ledger 1912 via Neal Dodge |
| 1-2: weight, nominal, diameter, canons, turning added | Ranald Clouston papers 1980 via Neal Dodge | |
| Frame added | Ranald Clouston papers 1980 via Neal Dodge |