Where Grand Fleet turrets could become Fort Drums

Where could Britain use surplus Grand Fleet guns and turrets in Fort Drum-style defenses?

The suggestions include Gibraltar, Singapore, and the Isle of Wight, with two or three bastions proposed for Singapore. Another named location is unclear.

The proposed sites include Gibraltar, Singapore, and the Isle of Wight; another place name is indistinct in the captions. Singapore receives a suggestion for two or three fortified islands using surplus heavy guns. Alex envisages local troops under capable officers holding those positions. This is a hypothetical use of Grand Fleet turrets, with the subsequent discussion turning to the command failures he associates with Singapore's fall.