Kumera Marine, with locations in Sandefjord and Helseth (N) as well as in Troisdorf (D), previously known as Kumera AS, Helseth and CuW Keller, specializes in marine gearboxes and propellers. Sandefjord focuses on gearbox manufacturing and hybrid solutions, while Helseth excels in controllable pitch propellers (CPP) and manually adjustable pitch propellers (APP) up to 4500 mm diameter. The range of marine gearboxes from Sandefjord and propellers from Helseth in Norway is a perfect match covering engine power range from 800 kW to 4.000 kW.

Above 3.000 kW and until 40.000 kW input power, marine gearboxes will be supplied by the Troisdorf plant in Germany. In addition to that, generator gearboxes in hollow shaft- or front end design for low speed inputs (2-stroke engines) are also available.​

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https://www.kumera.no/

https://kumera.com/en/factory/kumera-getriebe-gmbh/