![Invention Drops Boats a Few Metres Down and Lifts Them Up](https://hight3ch.com/wp-content/uploads/2014/08/invention-drops-boats-a-few-metr.jpg)
New Dutch tilting sluice invention drops boats a few metres down and lifts them up without the need to drain or fill a lock (which is slow)
New Dutch tilting sluice invention drops boats a few metres down and lifts them up without the need to drain or fill a lock (which is slow)
Smart!