Join our crew and become one of the 107,186 members that receive our newsletter.

Cleaner air in ports: U.S. scrubber barge propelled by SCHOTTEL

Cleaner air in ports: U.S. scrubber barge propelled by SCHOTTEL

Total Views: 213
May 26, 2022

The German propulsion expert SCHOTTEL has been awarded a contract to supply rudder propellers on a self-propelled barge-based vessel stack exhaust capture and treatment system. It will be produced and operated by U.S. company Clean Air Engineering – Maritime, Inc. (CAE-M), based in San Pedro, California. The system is called the Marine Exhaust Treatment System or METS-3 and was designed by Fassmer Techincal Projects and will be built at U.S. shipyard Greenbrier Companies, Inc, Portland. Additional METS systems will be produced and operated in several other California seaports.

The 26 metre long and 13 metre wide barge will be operated by CAE-M to capture and treat stack exhaust of vessels in the Ports of Long Beach and Los Angeles, California.

Nicholas Tonsich, President at Clean Air Engineering – Maritime, Inc: “It is more important than ever to develop innovative technologies that help reduce emissions in ports to an absolute minimum. Clean Air Engineering – Maritime’s latest METS-3 will succeed in doing exactly that. We are excited to have SCHOTTEL as an experienced partner at our side and that they are part of this flagship project.”

Tim Klaybor, Managing Director at Fassmer USA: “A number of factors had to be taken into account in the design of this next-generation CAE-M METS-3, which is why we were looking for a reliable partner to cooperate with. SCHOTTEL and Fassmer are sharing a long-standing relationship. We have made positive experiences, with both reliable products and competent service.”

Scope of SCHOTTEL supply

The main propulsion system of the barge consists of two electrically-driven SCHOTTEL RudderPropellers type SRP 150 (400 kW each) featuring propeller diameters of 1.2 metres. The SRPs will run on biodegradable oils (EALs). The scope of delivery includes the complete electrical package, which comprises electric motors, frequency drives as well as a portable control station for the SCHOTTEL MasterStick.

One single control lever for up to six propulsion units

The SCHOTTEL MasterStick is a joystick system which can control up to six propulsion units simultaneously. The thrust and the alignment of the propulsion units are controlled and distributed by a software in such a way that all translational and rotational movements required for manoeuvring the barge are executed optimally. The ship’s movement can thus be controlled intuitively and comfortably in any desired directions of motion or in a combination of those.

About Clean Air Engineering – Maritime, Inc

Clean Air Engineering – Maritime, founded in 2010, develops and operates systems that remove diesel emissions from the auxiliary engines and boilers of ocean-going vessels while at berth or anchor. Based in the Ports of Los Angeles and Long Beach, California, CAE-M closely works together with many leaders in the shipping industry. The continued goal is to support ports globally in controlling and reducing emissions.


The SCHOTTEL Group, with its headquarters in Spay/Rhine, is one of the world’s leading manufacturers of steerable propulsion systems for ships and offshore applications. Founded in 1921, the company has been developing and manufacturing azimuth propulsion and complete propulsion systems with power ratings of up to 30 MW for vessels of all sizes and types for 70 years. Around 100 sales and service locations worldwide ensure customer proximity.

100 years of SCHOTTEL:
Learn more about the company’s beginnings and its impressive history here.


Unlock Exclusive Insights Today!

Join the gCaptain Club for curated content, insider opinions, and vibrant community discussions.

Sign Up
Back to Main
polygon icon polygon icon

Why Join the gCaptain Club?

Access exclusive insights, engage in vibrant discussions, and gain perspectives from our CEO.

Sign Up


Maritime and offshore news trusted by our 107,186 members delivered daily straight to your inbox.

Join Our Crew

Join the 107,186 members that receive our newsletter.