First introduced in 1985, the B diesel has seen continuous developed with the launch of the long-stroke version in 2001. Compact and powerful with low fuel consumption, the B32:40 engine family has proved very reliable in marine applications and is able to operate on Marine Diesel Oil (MDO) and Heavy Fuel Oil (HFO).

In 2006, the first B32:40 engines with Tier 2 certification entered service. These stringent emission levels were met with no additional off-engine clean up features. 6, 8, 9, V12 and V16 engines are available with powers from 3,000 to 8,000kW.

The Bergen 32:40V diesel series is DNV certified to provide emergency power on mobile offshore drilling units successfully completing full load testing at 25 degrees.