Royal Arsenal Gridiron Slipway

Former Royal Arsenal slipway, Thamesmead. Known as The Gridiron, it was used to load large guns onto barges and these were then shipped to test ranges at Shoeburyness. Combined weight of the railway wagons (known as proof-sleighs) and the guns could be 200 tons - 2 barges were in operation - called Gog and Magog. - Text by Peter Barry. 3356 photos taken in February 2022 with a Sony a7R III and processed in Reality Capture. Far river side corner could not be accurately captured due to deep mud. Assistance provided by Peter Barry. High resolution scan of gates by Peter: https://skfb.ly/osRXo