COPP Survey: 🗓️ #OTD in 1944 – #OpPostAble Day 5 – After 4½ days away, at⌚18:30 X-20 is secured alongside at Fort Blockhouse in Gosport, home of submarine base HMS Dolphin – COPP’s first X-craft-based recce of the Normandy coast is at last complete. (📸 from 'Steady as She Goes') #NavalHistory 🧵

🗓️ #OTD in 1944 – #OpPostAble Day 5 – After 4½ days away, at⌚18:30 X-20 is secured alongside at Fort Blockhouse in Gosport, home of submarine base HMS Dolphin – COPP’s first X-craft-based recce of the Normandy coast is at last complete. (📸 from 'Steady as She Goes') #NavalHistory 🧵