Author 'Crabecanoe' (Id 121379 ) : June 2010. Lock the Great Square in Lille (North). The barge is empty just left the reach of the lock. It is fully loaded and at that speed it is not uncommon to see waves over a meter ahead on the banks. When the canoe must quickly begin the perpendicular wave and do not stop if the canoe paddle becomes a bathtub (true story). Fortunately it is designed (double hull) to be unsinkable.