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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.

C9 Generator Set Package

The Caterpillar C9 generator set joins our existing range of clean, quiet, compact, and smooth-running generator sets. This range of small gen sets provides customers with a more comprehensive power offering, enabling them to enjoy the benefit of dealing with one supplier for both propulsion and auxiliary power.

  • Specification Summary

  • Minimum Rating 142R ekW (178 kVA)
  • Maximum Rating 250 ekW (313 kVA)
  • Frequency 50 hz or 60hz
  • Speed 1500 rpm (50hz) or 1800 rpm (60 hz)

Product Details

Generator Set Specifications

Minimum Rating 142R ekW (178 kVA)
Maximum Rating 250 ekW (313 kVA)
Frequency 50 hz or 60hz
Speed 1500 rpm (50hz) or 1800 rpm (60 hz)

Generator Set Configurations

Emissions IMO/EPA Tier 2 Compliant

Engine Specifications

Configuration C9, In-line 6, 4-Stroke-Cycle Diesel
Aspiration Turbocharged-Aftercooled
Bore 112.0 mm
Stroke 149.0 mm
Displacement 8.8 L
Governor Type Electronic
Fuel System HEUI™

Generator Specifications

Excitation AREP
Pitch 2/3
Number of leads 12 lead, reconnectable
Insulation Class H
Voltage Regulation ±0.5%
IP Rating IP23 Water protection
Overspeed capability Overspeed shutoff - electronic
Voltage regulator Solid state voltage regulator with integral voltage adjustment

Generator Set Dimensions

Width 996.8 mm
Height 1169.0 mm
Weight 1753 kg (3865 lb) - 1903 kg (4195 lb)
Length 2106-2216 mm (82.9-87.2 in)
  • AIR INLET SYSTEM
    •  Aftercooler (heat exchanger and keel cooled engines only)
    •  Turbocharger
  • CONTROL PANELS
    •  Electronic governor
    •  Hydraulic Electronic Unit Injection (HEUI) fuel system
    •  Electronic Control Module (ECM)
    •  Electronic diagnostics and fault logging
    •  Engine mounted 40-pin dedicated customer connector
    •  SAE J1939 data link
  • COOLING SYSTEM
    •  Thermostat and housing
    •  Jacket water pump, belt driven, centrifugal
    •  Auxiliary sea water pump, gear driven (heat exchanger and keel cooled engines only)
    •  Radiator, engine mounted (includes guard, blower fan, fan drive, fan guard)
    •  Expansion tank (heat exchanger engines only)
    •  Engine mounted heat exchanger, removable tube bundle (for sea water) (heat exchanger engines only)
    •  Engine oil cooler
    •  Auxiliary sea water lines
    •  Keel cooling (includes pipe thread flange kit)
  • EXHAUST SYSTEM
    •  Manifold & Turbocharger, watercooled
    •  152 mm (6 in) round flanged outlet
    •  Elbow, dry, 152 mm (6 in)
  • Manifold & Turbocharger, watercooled
    • 152 mm (6 in) round flanged outlet
      • Elbow, dry, 152 mm (6 in)
        • FLYWHEELS & FLYWHEEL HOUSINGS
          •  Flywheel, SAE No. 1, 113 teeth
          •  Flywheel housing, SAE No. 1
        • FUEL SYSTEM
          •  Fuel filter, Front service
          •  Fuel transfer pump
          •  Fuel priming pump
        • GENERATORS
          •  12 lead, reconnectable
          •  3 phase Brushless
          •  Separately excited from auxiliary winding to provide 300% short circuit current up to 10 seconds
          •  2/3 Pitch
          •  Broad voltage band
          •  IP23 Water protection
          •  Solid state voltage regulator with integral voltage adjustment
          •  Class H insulation
          •  Generator temperature rise exceeds marine society requirements for Class H insulation
          •  105 C @ 50 C ambient - prime
          •  85 C @ 50 C ambient - prime Connection poles
        • INSTRUMENTATION
          •  Instrument panel
          •  Electric service meter
          •  Start/stop switch
          •  Emergency stop button
          •  Maintenance due light
          •  Diagnostic light
          •  Warning light
          •  Maintenance clear switch
          •  15A breaker
        • LUBE SYSTEM
          •  Crankcase breather
          •  Oil filter, spin-on, RH Service
          •  Oil filler, in valve cover
          •  Oil level gauge, LH service
          •  Oil pan
          •  Oil pan drain, LH service
          •  Engine oil pump (gear driven)
        • MOUNTING SYSTEM
          •  Skiddable base frame
          •  Front support
          •  Anti vibration isolators between base and engine-generator
        • PROTECTION SYSTEM
          •  Overspeed shutoff - electronic
        • GENERAL
          •  Torsional vibration damper and guard
          •  Lifting eyes
          •  Protective lifting covers
          •  Literature
          •  Battery disconnect switch
          •  Engine Wiring
          •  Plastic wrap packaging
          •  NOTE: Engines for keel cooling do NOT include keel cooler.
        • AIR INLET SYSTEM
          •  Air Cleaner Rain Cap
        • CONTROL SYSTEM
          •  Load sharing attachment
        • COOLING SYSTEM
          •  Coolant recovery tank
          •  Coolant level sensor
          •  Coolant Flange Kit
        • Coolant recovery tank
          • Coolant level sensor
            • Coolant Flange Kit
              • EXHAUST SYSTEM
                •  Elbows
                •  Pipe
                •  Flexible fittings
                •  Flange
                •  Rain caps
                •  Mufflers
                •  Shields
              • FUEL SYSTEM
                •  Fuel cooler
                •  Flexible fuel lines
                •  Fuel temperature sensor
                •  Fuel and oil shielding
              • GENERATORS AND GENERATOR ATTACHMENTS
                •  Extension Terminal Box
                •  Engine and Generator Certification:
              • INSTRUMENTATION
                •  Magnetic Pickup
              • Magnetic Pickup
                • LUBE SYSTEM
                  •  Sump Pumps, Manual
                  •  Duplex Oil Filters
                • POWER TAKE-OFFS
                  •  Crankshaft pulley
                • Crankshaft pulley
                  • STARTING SYSTEM
                    •  Air pressure regulator
                    •  Air silencer
                  • Air pressure regulator
                    • Air silencer
                      Built for it