B33:45L

Liquid Fuel | Medium Speed Propulsion Engine and Generating Set
3 600 - 5 400 kW

Marine diesel engine and generating set designed for cost-effective operation.

Cost-effective operation

The Bergen B-series is based on a modular design, which gives a flexible platform and at the same time carries forward the Bergen traditional values as a robust and reliable engine.

The selection of technology was done after consulting a broad range of operators, designers and shipbuilders, to establish the qualities they prize in an engine. This engine series was first introduced to the market in 2014 as a diesel engine, and the gas version followed in 2018. It is available in several in-line or Vee cylinder variants for both diesel and gas, and is equally suitable for mechanical transmission or as a marine generating set.

Weight and dimensions

Weight and dimensions Weight kg* LengthWidthHeight
B33:45L6P42 4005 6302 3803 890
B33:45L8P53 5006 8002 6654 160
B33:45L9P56 4007 3202 6654 170

Technical data

Technical data  UnitB33:45L6PB33:45L8PB33:45L9P
Number of cylinders  689
Engine speedr/min750750750
Mean piston speedm/sec.11.211.211.2
Max cont. rating (MCR)kW3 6004 8005 400
Mean effective pressure (BMEP)bar252525
Specific fuel oil consumption (SFOC)g/kWh**from 173from 170from 171
SFOC with engine-driven pumpsg/kWhfrom 175from 176from 173
Specific lubricating oil consumptiong/kWh0.50.50.5
Cooling water temp. engine outlet°C909090

Weight and dimensions

Weight and dimensions Weight kg (engine/generator)Length mm (engine/generator)WidthHeight
B33:45L6A48 300 / 17 0004 995 / 3 8902 4054 100
B33:45L8A60 600 / 20 7006 070 / 3 8402 6904 370
B33:45L9A62 400 / 21 6006 095 / 3 9412 4864 159

Technical data

Technical data UnitB33:45L6AB33:45L8AB33:45L9A
Number of cylinders  689
Engine speedr/min720 / 750720 / 750720 / 750
Mean piston speedm/s11.2511.2511.25
Max cont. rating (MCR)kW3 6004 8005 400
Max cont. rating altern. (h=0.97)kWel3 4924 6565 238
Max cont. rating altern. (Cosf=0.8)kVa4 3655 8206 548
Mean effective pressure (BMEP)bar26 / 2526 / 2526 / 25
Specific fuel oil consumption (SFOC)*g/kWhfrom 173from 174from 171
SFOC with engine-driven pumpsg/kWhfrom 175from 176from 173
Specific lubricating oil consumptiong/kWh0.50.50.5
Cooling water temp. engine outlet°C909090

About the data 

Remote monitoring

A single Bergen medium-speed engine can have more than 200 sensors transmitting a vast amount of data that measures all aspects of an engine’s health and performance at any given moment.

Data analytics, A.I and deep learning combine to give you real-time insights into your equipment using our Equipment Health Monitoring system (EHM).

Our liquid fueled propulsion engines and generating sets

Request more information

Kongsberg Maritime is the exclusive distributor of our marine engines and will get in touch to help you find a solution that fits your needs.