The bucket can be used with all types of hydraulic excavator, either land-based or floating, and is especially suited to work in narrow canals, small reservoirs or harbors where only a few thousand m3 of material needs to be removed and where a full-size dredger would prove impractical or uneconomical.
https://www.youtube.com/watch?v=ac0TwGDEiZo
The device comes in five models – designated BD150t to BD300 according to suction diameter – and is “easy to use and simple to install, it can be operated by one person“.
[mappress]
Dredging Today Staff, February 26, 2013