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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 25 E Marine Generator Set

Designed for a high power output, the M 25 E is not only the right choice for customers seeking power density and increased load response capabilities, but also for those who choose to lower operational fuel costs utilizing selected load profiles in combination with the most efficient engine speed.

  • Specification Summary

  • Minimum Rating 2016 kWe (2625 kVA)
  • Maximum Rating 3024 kWe (3938 kVA)
  • Emissions IMO II
  • Configuration 6,8,9 Cylinder
  • Specification Sheet

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Product Details

Generator Set Specifications

Minimum Rating 2016 kWe (2625 kVA)
Maximum Rating 3024 kWe (3938 kVA)

Generator Set Configurations

Emissions IMO II

Engine Specifications

Configuration 6,8,9 Cylinder
Bore 255 mm
Stroke 400 mm
Displacement 20.4 L

Generator Set Dimensions

Weight 43.0 - 56.0 t (94798 - 123459 lbs)
Length 7717 - 8713 mm (303.8 - 343.0 in)
Width 2357 mm (92.8 in)
Height 3866 - 4066 mm (152.2 - 160.1 in)
  • Air Inlet System
    •  Air intake silencer / filter
  • Air intake silencer / filter
    • Control System
      •  Load sharing unit (for multiple engine plant only)
      •  Modular Alarm Control and Protection System (MACS)
      •  Speed governor
    • Cooling System
      •  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 (attached / for MDO/MGO only)
      •  Fuel indicator filter
      •  Fuel pressure valve (fitted / for MDO/MGO only)
    • Instrumentation
      •  Control push buttons and lamps
      •  Local control panel
      •  Pressure and temperature indicator
    • Control push buttons and lamps
      • Local control panel
        • Pressure and temperature indicator
          • Lube System
            •  Lube oil cooler (separate)
            •  Lube oil pump (engine driven)
            •  Lube oil self-cleaning filter
            •  Oil sump in base frame
            •  Pre-lubricating oil pump (electric driven / fitted on base frame)
            •  Pressure regulating valve
          • Lube oil cooler (separate)
            • Lube oil pump (engine driven)
              • Lube oil self-cleaning filter
                • Oil sump in base frame
                  • Pre-lubricating oil pump (electric driven / fitted on base frame)
                    • Pressure regulating valve
                      • Mounting System
                        •  Flexible pipe connections
                        •  High flexible coupling
                        •  Resilient mounting
                      • 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)
                          • Air Inlet System
                            •  Air inlet shut-off valve
                            •  Air intake transition piece
                            •  Expansion joint
                            •  Silencer / filter
                          • Control System
                            •  Air injection control (for better load acceptance)
                            •  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 acceptance)
                            • 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)
                                        •  HT temperature control valve fitted on base frame
                                        •  LT cooling water pump (electric driven)
                                        •  Sea water cooling pump (electric driven)
                                        •  Temperature control valve
                                      • 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)
                                              • HT temperature control valve fitted on base frame
                                                • LT cooling water pump (electric driven)
                                                  • Sea water cooling pump (electric driven)
                                                    • Temperature control valve
                                                      • Exhaust System
                                                        •  Silencer (with spark arrester)
                                                      • Fuel System
                                                        •  Fuel oil cooler
                                                        •  HFO final preheater
                                                        •  HFO pressure regulating valve
                                                        •  HFO self-cleaning automatic filter
                                                        •  HFO supply and booster pumps (electric driven)
                                                        •  HFO treatment and supply modules
                                                        •  HFO viscosity control device
                                                        •  Mixing tank
                                                      • Lube System
                                                        •  Lube oil centrifuge
                                                        •  Lube oil pump (electric driven)
                                                        •  Lube oil treatment and combined modules
                                                        •  Temperature control valve
                                                        •  Temperature control valve fitted on base frame
                                                      • Lube oil centrifuge
                                                        • Lube oil pump (electric driven)
                                                          • Lube oil treatment and combined modules
                                                            • Temperature control valve
                                                              • Temperature control valve fitted on base frame
                                                                • Mounting System
                                                                  •  Double resilient mounting (engine and base frame)
                                                                • Starting System
                                                                  •  Starting air compressor
                                                                  •  Starting air receiver
                                                                • Starting air compressor
                                                                  • Starting air receiver
                                                                    • General
                                                                      •  Engine PTO coupling
                                                                      •  Generator customer supply
                                                                      •  Part Load Optimization Kit for constant speed engine (SFOC improvement, smoke reduction)
                                                                      •  Part Load Optimization Kit for variable speed engine (massive SFOC improvement,...)
                                                                      •  PRO shaft on counter-flywheel side
                                                                    • Engine PTO coupling
                                                                      • Generator customer supply
                                                                        • Part Load Optimization Kit for constant speed engine (SFOC improvement, smoke reduction)
                                                                          • Part Load Optimization Kit for variable speed engine (massive SFOC improvement,...)
                                                                            • PRO shaft on counter-flywheel side
                                                                              Built for it