A lock ladder or staircase is used to raise canal boats over large vertical distances within a small horizontal range. They operate by allowing the lower gate of one lock to form the upper gate of the adjacent lock. To avoid wasting water, they require very careful management. Passage through such lock systems often involves a significant delay. This set of locks at Foxton in Leicestershire is the highest combination of ladders of locks in the United Kingdom. It’s located on the Leicester Line of the Grand Union Canal. When…
