Established as a pure engine manufacturer in 1943, Bergen Engines delivered its first engine in 1946. The company built a new factory in 1971 at Hordvikneset, north of Bergen, and became a Rolls-Royce company in 1999.

Since 1st July 2013, Bergen Engines is a subsidiary of Rolls-Royce Power Systems, wholly owned by Rolls-Royce. In 2021 Bergen Engines was acquired by Langley Holdings, and the effective completion of the sale is scheduled for 31 December 2021.

Until 1946, the Bergen engines were produced by the shipyard BMV (Bergen Mekaniske Verft). BMV had been purchasing engines from sub-suppliers for many years, but were not satisfied with the low reliability of these engines. and saw the need to Instead of purchasing engines from sub-suppliers, BMV decided to develop their own, high quality engines, that were perfectly adapted to the harsh environment of the Atlantic Sea.

B36:45 In-Line Gas Propulsion Engine Datasheet