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Marine Generator Sets

Industry-leading technology allows Caterpillar to create the most reliable commercial engines for a variety of applications. From tugs and container vessels to yachts and sport fishers, Cat and MaK engines have demonstrated their efficiency countless times. With remarkable reliability and durability, these engines will exceed your expectations for decades.

M 43 C Marine Generator Set

As a generator drive unit for diesel-electric operation of electric motors, the M 43 has proved itself in service. The compact modular construction with less pipework, easy maintenance access to components, low fuel and lubricating oil consumption as well as extended life between main component overhauls – these have been the decisive factors for the high acceptance rate of the M 43 C. Since its introduction into the market, the MaK engine series M 43 C has achieved an outstanding position between marine applications as an in-line engine in 6, 7, 8 and 9 cylinder versions. More than 650 engines with a total power of more than 6,500 MW have already been sold, making the M 43 C the market leader in the 5–9 MW power class.

  • Specification Summary

  • Minimum Rating5754 kWe (7200 kVA)
  • Maximum Rating9063 kWe (11340 kVA)
  • EmissionsEPA Tier 2 & IMO II
  • Configuration6,7,8,9 Cylinder
  • Bore430 mm
  • Specification Sheet


Product Details

Generator Set Specifications

Minimum Rating 5754 kWe (7200 kVA)
Maximum Rating 9063 kWe (11340 kVA)

Generator Set Configurations

Emissions EPA Tier 2 & IMO II

Engine Specifications

Configuration 6,7,8,9 Cylinder
Bore 430 mm
Stroke 610 mm
Displacement 88.6 L

Generator Set Dimensions

Weight 178 t - 240 t (392422 lbs - 529109 lbs)
Length 12202 mm - 14459 mm (480.4 in - 569.3 in)
Width 3400 mm (133.9 in)
Height 6278 mm - 6649 mm (247.2 in - 261.8 in)
  • Air Inlet System
    •  Air intake silencer / filter
  • Control System
    •  Load sharing unit (for multiple engine plant only
    •  Protection panel (emergency stop, override, reset push buttons)
    •  Protection system
    •  Serial link interface (MODbus/canbus)
    •  Speed governor
    •  Start/stop panel
  • Load sharing unit (for multiple engine plant only
    • Protection panel (emergency stop, override, reset push buttons)
      • Protection system
        • Serial link interface (MODbus/canbus)
          • Speed governor
            • Start/stop panel
              • Cooling System
                •  Electric cooling water preheater
                •  HT cooling water pump (engine driven)
                •  2-stage charge air cooler
              • Electric cooling water preheater
                • HT cooling water pump (engine driven)
                  • 2-stage charge air cooler
                    • Exhaust System
                      •  Exhaust gas expansion joint
                      •  Exhaust gas insulated manifolds
                      •  Turbocharger at counter-flywheel end
                    • Fuel System
                      •  Fuel circulating pump (electric driven / for MDO/MGO only)
                      •  Fuel indicator filter
                      •  Fuel pressure valve (separate / for MDO/MGO only)
                    • Instrumentation
                      •  Control push buttons and lamps
                      •  Emergency stop lever
                      •  Local control panel
                      •  Pressure and temperature indicator
                    • Lube System
                      •  Engine with dry sump
                      •  Lube oil duplex filter
                      •  Lube oil plate cooler (separate)
                      •  Lube oil pump (engine driven)
                      •  Lube oil self-cleaning filter (separate)
                      •  Oil sump in base frame
                      •  Pre-lubricating oil pump (electric driven / fitted on base frame)
                      •  Pressure regulating valve
                    • Engine with dry sump
                      • Lube oil duplex filter
                        • Lube oil plate cooler (separate)
                          • Lube oil pump (engine driven)
                            • Lube oil self-cleaning filter (separate)
                              • Oil sump in base frame
                                • Pre-lubricating oil pump (electric driven / fitted on base frame)
                                  • Pressure regulating valve
                                    • Mounting System
                                      •  Engine resiliently mounted on base frame, base frame mounted rigidly
                                      •  Flexible pipe connections
                                      •  High flexible coupling
                                    • Starting System
                                      •  Electrical barring device
                                      •  Starting air valve
                                    • Electrical barring device
                                      • Starting air valve
                                        • General
                                          •  Engine, flexible coupling and generator mounted on a common base frame
                                          •  Flywheel cover
                                          •  Lifting device (rental)
                                          •  Torsional Vibration Calculation (TVC)
                                        • Engine, flexible coupling and generator mounted on a common base frame
                                          • Flywheel cover
                                            • Lifting device (rental)
                                              • Torsional Vibration Calculation (TVC)
                                                • Air Inlet System
                                                  •  Air inlet shut-off valve
                                                  •  Air intake transition piece
                                                  •  Expansion joint
                                                  •  Silencer / filter
                                                • Control System
                                                  •  Air injection control (for better load request)
                                                  •  Electronic speed governor
                                                  •  Engine alarm system
                                                  •  Remote indicators (start air pressure, engine speed, etc.)
                                                  •  Starter for electric driven pumps
                                                  •  24 DC UPS
                                                • Cooling System
                                                  •  CW piping for generator cooling on base frame
                                                  •  CW piping for lubricating oil cooler on base frame
                                                  •  FW/SW plate cooler
                                                  •  HT cooling water pump (electric driven)
                                                  •  LT cooling water pump (electric driven)
                                                  •  Sea water cooling pump (electric driven)
                                                  •  Temperature control valve
                                                • Exhaust System
                                                  •  Silencer (with or without spark arrester)
                                                • Silencer (with or without spark arrester)
                                                  • Fuel System
                                                    •  Fuel oil cooler
                                                    •  HFO final preheater
                                                    •  HFO pressure regulating valve
                                                    •  HFO self-cleaning automatic filter
                                                    •  HFO supply and booster pumps (electrical driven)
                                                    •  HFO treatment and supply modules
                                                    •  HFO viscosity control device
                                                    •  Mixing tank
                                                  • Lube System
                                                    •  Lube oil pump (electrical driven)
                                                    •  Lube oil treatment and combined modules
                                                    •  Temperature control valve
                                                  • Lube oil pump (electrical driven)
                                                    • Lube oil treatment and combined modules
                                                      • Temperature control valve
                                                        • Mounting System
                                                          •  Resilient mounting on base frame
                                                        • Resilient mounting on base frame
                                                          • Starting System
                                                            •  Starting air compressor
                                                            •  Starting air receiver
                                                          • General
                                                            •  Generator customer supply

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