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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 20 C Marine Generator Set

The main features of the diesel generator set M 20 C are ease of installation, reliable operation, ease of maintenance and easy component accessibility. Its base is the rigid frame which forms a foundation for both the engine and the generator set and includes an integral, large-capacity oil sump and universal fuel supply equipment covering both HFO and MDO operation. The M 20C has a wide range of application providing power for the continuous generation of electricity where a high level of reliability is important. The power range of the M20C engine series as a generator unit varies from 1,224 to 2,160 kVA.

  • Specification Summary

  • Minimum Rating979 kWe (1224 kVA)
  • Maximum Rating1726 kWe (2160 kVA)
  • EmissionsIMO II
  • Configuration6,8,9 Cylinder
  • Bore200 mm
  • Specification Sheet


Product Details

Generator Set Specifications

Minimum Rating 979 kWe (1224 kVA)
Maximum Rating 1726 kWe (2160 kVA)

Generator Set Configurations

Emissions IMO II

Engine Specifications

Configuration 6,8,9 Cylinder
Bore 200 mm
Stroke 300 mm
Displacement 9.4 L

Generator Set Dimensions

Weight 18.8 t - 30.0 t (41447 lbs - 66139 lbs)
Length 6073 mm - 7125 mm (239.1 in - 280.5 in)
Width 1680 mm - 1816 mm ( 66.1 in - 71.5 in)
Height 2833 mm - 3010 mm (111.5 in - 118.5 in)
  • Air Inlet System
    •  Air intake silencer / filter
  • Control System
    •  Load Sharing Unit (for multiple engine plant only)
    •  Protection System
    •  Serial Link Interface (MODbus RTU / canbus)
    •  Speed governor
  • Load Sharing Unit (for multiple engine plant only)
    • Protection System
      • Serial Link Interface (MODbus RTU / canbus)
        • Speed governor
          • Cooling System
            •  Charge air cooler
            •  Electric cooling water preheater (fitted on base frame)
            •  HT cooling water pump (engine driven)
            •  LT cooling water pump (engine driven)
          • Exhaust System
            •  Exhaust gas expansion joint
            •  Exhaust gas insulated manifolds
            •  Turbocharger at counter-flywheel side
          • Fuel System
            •  Fuel circulating pump (attached / 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
            •  Lube oil cooler
            •  Lube oil pump (engine driven)
            •  Lube oil self-cleaning filter
            •  Oil sump in base frame
            •  Pre-lubricating oil pump (electr. driven/fitted on base frame)
            •  Pressure regulating valve
          • Lube oil cooler
            • Lube oil pump (engine driven)
              • Lube oil self-cleaning filter
                • Oil sump in base frame
                  • Pre-lubricating oil pump (electr. driven/fitted on base frame)
                    • Pressure regulating valve
                      • Mounting System
                        •  Flexible pipe connections
                        •  High flexible coupling
                        •  Resilient mounting
                      • Starting System
                        •  Air starting motor
                        •  Manual barring device
                      • General
                        •  Engine, flex. coupling and generator mounted on a common base frame
                        •  Flywheel cover
                        •  Lifting device (rental)
                        •  Torsional Vibration Calculation (TVC)
                      • Engine, flex. 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
                              • 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
                                            •  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 centrifuge
                                              •  Lube oil pump (electrical driven)
                                              •  Lube oil treatment and combined modules
                                            • Mounting System
                                              •  Double resilient mounting
                                            • Starting System
                                              •  Starting air compressor
                                              •  Starting air receiver
                                            • General
                                              •  Engine PTO coupling
                                              •  Generator customer supply
                                              •  PTO shaft on counter-flywheel side

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