Interesting...moving the whole body of the machine upwards, rather than just the operator platform as in materials handlers. Must make the machine more top heavy and somewhat less stable though. Nice pictures, thanks.
I should think rust may be one of the least problems you think about when operating such a machine
Still don't know who actually made these two machines, would have thought a barge mounted dredger would have been a better bet? Suppose they are designed for a particular purpose?