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Commercial Propulsion Engines

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 32 C Marine Propulsion Engine

The acceptance of the M 32 C long-stroke engine series in the marine industry is a success story, whose equal is hard to find in this power class. Since its introduction in 1994, more than 1600 engines have been sold. 80% of them are marine propulsion engines, and 20% are electrical generator sets. The M 32 C series is a genuine heavy fuel engine, and 75% of all engines commissioned burn the economical heavy fuel oil. The M 32 C long-stroke series with a bore of 320 mm has continued the market success of its predecessor in this bore size. Decisive factors in its development have been maximum customer benefit requirements, i.e. economy and operational reliability. Environmental aspects, however, have also been important. Operational results have fully confirmed the design objectives.

  • Specification Summary

  • Power Range2880-4500 kW
  • Speed Range600 rpm
  • EmissionsIMO II
  • AspirationTurbocharged
  • Bore320 mm
  • Specification Sheet


Product Details

Power Rating

Power Range 2880-4500 kW

Engine Specifications

Speed Range 600 rpm
Emissions IMO II
Aspiration Turbocharged
Bore 320 mm
Stroke 480 mm
Displacement 38.7 L
Rotation (from flywheel end) Counterclockwise/Clockwise
Configuration 6, 8, 9 Cylinder

Dimensions & Weights

Minimum Dry Weight 39.5 kg
Minimum Length 5936 mm
Maximum Length 7823 mm
Minimum Height 3836 mm
Maximum Height 4361 mm
Minimum Width 2368 mm
Maximum Width 2182 mm
  • Air Inlet System
    •  Air intake silencer / filter
  • 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
                  •  Electronic cooling water preheater
                  •  HT cooling water pump (engine driven)
                  •  2-stage charge air cooler
                • Electronic 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 flywheel end
                      • Fuel System
                        •  Fuel circulating pump (attached / for MGO/MDO only)
                        •  Fuel indicator filter
                        •  Fuel pressure valve (attached / for MGO/MDO only)
                      • Fuel circulating pump (attached / for MGO/MDO only)
                        • Fuel indicator filter
                          • Fuel pressure valve (attached / for MGO/MDO only)
                            • Instrumentation
                              •  Control push buttons and lamps
                              •  Emergency stop lever
                              •  Local control panel
                              •  Pressure and temperature indicator
                            • Control push buttons and lamps
                              • Emergency stop lever
                                • Local control panel
                                  • Pressure and temperature indicator
                                    • Lube System
                                      •  Dry sump
                                      •  Lube oil plate cooler (separate)
                                      •  Lube oil pump (engine driven)
                                      •  Lube oil self-cleaning filter
                                      •  Pressure regulating valve
                                    • Mounting System
                                      •  High flexible coupling
                                      •  Rigid mounting
                                    • Starting System
                                      •  Electrical barring device
                                      •  Starting air valve
                                    • Electrical barring device
                                      • Starting air valve
                                        • General
                                          •  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
                                          •  Electronic speed governor cabinet
                                          •  Engine alarm system
                                          •  Remote control 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)
                                          •  Steam / thermal oil cooling water preheater
                                          •  Temperature control valve
                                        • Exhaust System
                                          •  Silencer (with or without spark arrester)
                                          •  Turbocharger at counter-flywheel side
                                        • 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
                                          •  Pre-lubricating oil pump (electrical driven)
                                          •  Temperature control valve
                                          •  Wet sump with dip stick
                                        • Lube oil centrifuge
                                          • Lube oil pump (electrical driven)
                                            • Lube oil treatment and combined modules
                                              • Pre-lubricating oil pump (electrical driven)
                                                • Temperature control valve
                                                  • Wet sump with dip stick
                                                    • Mounting System
                                                      •  Flexible pipe connections
                                                      •  Resilient mounting
                                                    • Starting System
                                                      •  Starting air compressor
                                                      •  Starting air receiver
                                                    • General
                                                      •  Cat Propulsion Systems
                                                      •  Engine PTO coupling
                                                      •  PTO alternator
                                                      •  PTO shaft on counter-flywheel side
                                                      •  Reduction gear
                                                      •  Reduction gear PTO coupling

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