If you consider the motion and weight, a large (very large) forge would fit in this category of 250000 to 1000000 in moving mass. Its definitely something we have in our grasp. Unfortunately, youd need not only multiple falkirk wheels, but wheels of varying size, and, there would be cases where a ship might have to wait a while, as theres no equally sized ship heading the other way. On the existing falkirk you dont have to deal with the weight differences because the average boat doesnt add much compared to the water to float it, not the case when its a shipping ship.