- Dewatering system (settling tanks/vessels, hydrocyclones, and/or vacuum filters) - Stacking equipment 
Dewatering systems consist of settling tanks, hydrocyclones and possibly vacuum filters.
Dewatering systems operate without the need of settling tanks.
People are swimming.
Among the programs and activities in which they can be found, Medicare is not one of them.
A bunch of people watch people compete.
The people are sitting
A boat in the water.
Republicans think he's a great guy.