![Scrubber barge](https://www.marinelog.com/wp-content/uploads/2022/05/SCHOTTEL_Scrubber-Barge_01-300x225.jpg)
Scrubber barge will clean up emissions from ships in California ports
A self-propelled, scrubber barge vessel being built to to capture and treat exhaust stack emissions vessels in the Ports of Long Beach and Los Angeles is to have a Schottel propulsion system.