With the help of external energy, such as electricity or fuels one can cleanup very effectively polluted areas. These are called active systems using external energy sources to help separate the waste using water or air currents. The KRAKEN helps collect and preselect floating riverine litter particles, either onboard (deck dock mode) or from the shore (bank mode). Depending on the operational area, KRKN is capable of operating in either strong airflow (suction mode) or high-pressure waterjet (dispersion) mode. In each mode of operation, the pressure difference is generated by an electromotor (to minimise noise and air pollution) to divert riverine litter particles to the collection zone. These devices use guided pressure flows to separate lightweight plastic particles from heavy, tangled floating waste. Although their power requirements are higher, their versatility and efficiency make them indispensable in river treatment toolboxes even in difficult field conditions.