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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.

Cat C7.1 Generator Set

Cat® C7.1 Diesel Marine Generator Set has three phase ratings of 50 Hertz at 100, 118, and 150 ekW with heat exchanger cooling that meet U.S. EPA Tier 3 commercial, IMO II, and EU CC2 emissions standards. The C7.1 also has three phase ratings of 60 Hertz at 118, 150, 175, and 175 ekW with heat exchanger cooling that meet U.S. EPA Tier 3 commercial, IMO II, and EU CC2 emissions standards. C7.1 gen set is available in 12 or 24 volt and this compact package is ideal for a wide range of commercial and pleasure craft applications.

  • Specification Summary

  • Minimum Rating 100 ekW (125 kVA)
  • Maximum Rating 200 ekW (250 kVA)
  • Frequency 50 Hz or 60 Hz
  • Speed 1500 rpm (50 hz) or 1800 rpm (60 hz)
  • Specification Sheet

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Product Details

Generator Set Specifications

Minimum Rating 100 ekW (125 kVA)
Maximum Rating 200 ekW (250 kVA)
Frequency 50 Hz or 60 Hz
Speed 1500 rpm (50 hz) or 1800 rpm (60 hz)

Generator Set Configurations

Emissions EPA Tier 3, IMO II, EU CC2

Engine Specifications

Configuration In-line 6, 4-Stroke-Cycle Diesel
Aspiration TA
Bore 105.0 mm
Stroke 135.0 mm
Displacement 7.1 L
Governor Type Electronic
Fuel System Common Rail Fuel System

Generator Specifications

Pitch 2/3
Number of leads 12
Insulation Class H
IP Rating IP23 Water protection
Voltage regulator Solid state

Generator Set Dimensions

Width 956.0 mm
Height 1263.0 mm
Weight 1652 -1840 kg, 3634-4026 lb
Length 76.2 in/1935 mm (minimum), 83.3 in/2116 mm (maximum)
  • AIR INLET SYSTEM
    •  Open Crankcase Ventilation (OCV) system
    •  Turbocharger, jacket water cooled
    •  Integrated coolant lines into manifold utilizing EGR circuit
  • CONTROL SYSTEM
    •  Panels available in RH, LH, and rear configurations with a remote mount option
    •  Electronic diagnostics and fault logging
    •  Electronic governor
    •  Electronic Control Module (ECM)
    •  SAE J1939 data link Ratings Only
    •  Electronic fuel/air ratio control
  • Panels available in RH, LH, and rear configurations with a remote mount option
    • Electronic diagnostics and fault logging
      • Electronic governor
        • Electronic Control Module (ECM)
          • SAE J1939 data link Ratings Only
            • Electronic fuel/air ratio control
              • COOLING SYSTEM
                •  Integrated heat exchanger and aftercooler
                •  Compact design integral coolant passages
                •  Thermostat and housing
                •  Jacket Water Heater 120/240V option
                •  Auxiliary seawater pump, gear driven
                •  Engine mounted heat exchanger, removable tubeBundle (for sea water) (heat exchanger engines only)
                •  Engine oil cooler
                •  Auxiliary sea water lines
                •  Keel cooling
              • EXHAUST SYSTEM
                •  Water-cooled exhaust manifold & turbocharger
                •  152 mm (6 in) round flanged outlet
                •  Dry Elbow/Flange options
              • FLYWHEELS & FLYWHEEL HOUSINGS
                •  Flywheel Housing, SAE No. 2
                •  Flywheel, 134 teeth
                •  SAE standard rotation
              • Flywheel Housing, SAE No. 2
                • Flywheel, 134 teeth
                  • SAE standard rotation
                    • FUEL SYSTEM
                      •  Common Rail Fuel System
                      •  Simplex and Duplex Fuel options
                      •  Flexible fuel line option
                      •  Fuel transfer pump, gear driven
                    • GENERATORS AND GENERATOR ATTACHMENTS
                      •  12 leads
                      •  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 105 C @ 50 C ambient - prime 85 C @ 50 C ambient - prime Connection poles
                    • LUBE SYSTEM
                      •  Crankcase breather
                      •  Simplex and Duplex options
                      •  Oil filter, RH service
                      •  Oil filler, in valve cover and timing case (option)
                      •  Oil level gauge, RH service
                      •  Oil pan
                      •  Oil pan drain, RH`
                      •  Lubricating oil
                      •  Engine oil pump (gear driven)
                    • Crankcase breather
                      • Simplex and Duplex options
                        • Oil filter, RH service
                          • Oil filler, in valve cover and timing case (option)
                            • Oil level gauge, RH service
                              • Oil pan
                                • Oil pan drain, RH`
                                  • Lubricating oil
                                    • Engine oil pump (gear driven)
                                      • MOUNTING SYSTEM
                                        •  Skiddable base frame
                                        •  Anti vibration isolators between base and engine-generator
                                      • POWER TAKE-OFFS
                                        •  Poly-V groove for alternator drive
                                        •  PTO Shaft Kit (optional)
                                      • GENERAL
                                        •  Torsional vibration damper and guard
                                        •  Paint, Caterpillar yellow
                                        •  Lifting eyes
                                        •  Protective lifting covers
                                        •  Literature
                                        •  Battery disconnect switch
                                        •  Plastic wrap packaging
                                        •  Note: Keel-cooled gen sets do not include the keel cooler(s).
                                        •  Engine is certified to D2/E2 emissions cycles
                                      • CONTROL SYSTEM
                                        •  Governor droop kit
                                      • EXHAUST SYSTEM
                                        •  Dry Elbow
                                        •  Dry Flange
                                        •  Exhaust Temp Sensor
                                      • Dry Elbow
                                        • Dry Flange
                                          • Exhaust Temp Sensor
                                            • FUEL SYSTEM
                                              •  Flexible Fuel Lines
                                            • LUBE SYSTEM
                                              •  Dipstick
                                            • Dipstick
                                              • COOLING SYSTEM
                                                •  Coolant recovery tank
                                                •  Jacket Water Heater
                                              • POWER TAKE-OFFS
                                                •  Crankshaft Pulley
                                              • Crankshaft Pulley
                                                Built for it