Ask for the difference between the amphibious excavator and the traditional barge-type excavator?

Compared with the traditional barge-type excavator, amphibious excavator is more suitable for cleaning silt rental operations, amphibious excavator can walk or work in the water, the first thing is due to the chassis tracks floating on the sealed pontoon, it is used to choose the double-hulled ship-shaped buoyancy tank to move, the speed reducer drives the track chain, which can ensure that it is free and smooth movement, it is an improved superstructure of the excavator, able to 360 Degree omni-directional rotation and hydraulic operation. Domestic currently do better as far as I know there is a company called Hubei Xingyong machinery