By the time the last dock, named after King George V, was constructed in 1921, London had become “the largest and richest port system in the world. ”
وعندما يُفتح جسره المتحرك القلاب ذو الدفتين ،‏ ينكشف ممر عرضه ٧٦ مترا يسمح بمرور السفن الكبيرة بين برجَيْه .‏