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Offshore Generator Sets

Oil and gas producers have relied on Caterpillar since the industry's earliest days. For 60 years, we've powered the petroleum business on land. Now we go with it onto the ocean, hundred of miles out, thousands of feet down.


The 9CM25C generator set brings to the offshore industry a legacy of proven reliability and durability in the marine industry. CM offshore generator sets feature standard modular designs, engine-mounted pumps and filters, and a full range of factory attachments that make their installation simple and efficient. Ideal applications for the 9CM25C offshore generator sets are main power on-board production vessels and platforms. Complete package offerings are MCS type-approved and compliant with IMO Tier II emissions standards, making their integration into vessels and platforms a simplified operation. Cat generator sets are backed by the worldwide network of Cat dealers ready to support your operation with technical support, service, parts, and warranty.

Product Details

Engine Specifications

Minimum Rating 2880.0 ekW
Maximum Rating 2880.0 ekW
Emissions IMO Tier II
Aspiration Turbocharged-Aftercooled
Engine Control Electronic
Generator Set Control Electronic
Weight 56000.0 kg
Stroke 400.0 mm
Bore 255.0 mm
Displacement 184.0 L


Length 9516.0 mm
Height 4437.0 mm
Width 2534.0 mm
  • Engine
    •  Motor-driven barring gear, fitted on engine
    •  Reversing contractor and pushbutton switch with cable
    •  Electronic speed setting equipment with actuator and speed pick-up
    •  Emergency shutdown equipment with pushbutton, separate, for manual emergency stop
  • Engine Indicators
    •  Gauge board with set liquid damped pressure gauges for: fuel, lubricating oil, fresh water, starting air, and charge air.
    •  On-engine thermometers for fuel, lubricating oil, fresh water, and charge air
    •  Electric remote speed indicator
    •  Turbocharger and remote speed indicator
    •  Exhaust gas temperature indicator
  • Control
    •  Manual control on engine, including: control panel with start /stop key, speed setting device, mechanical shutdown device, change over of control functions from engine to remote control
    •  Starting solenoid valve on engine, 24 V DC
    •  Separate electronic speed governor
  • Monitoring for Unattended Operation
    •  Pressure switches, mounted on engine, for: - Lube oil pressure at full load below danger level - Low lube oil pressure - Lube oil pressure below danger level - Lube oil pressure prelubrication failed - Low fresh water pressure at engine inlet - Fresh water
  • Starting Air System
    •  Separate non-return valve for the starting air pipe to the engine
  • Air Intake System
    •  Air intake filter, fitted on the turbocharger
    •  Air bottles, separate
  • Diesel Oil System
    •  Separate circulating pump driven by electric motor, horizontal or vertical
    •  Duplex filter with differential pressure indication
  • Exhaust System
    •  Turbocharger at free end with transition nozzle (0 degrees from the vertical and away from engine), with compressor cleaning device
    •  Expansion joint separate
    •  Separate silencer and spark arrester, unlagged 35 dB(A)
  • Fresh Cooling Water System
    •  HT pump, fitted on engine
    •  LT pump, separate, vertical design, electric motor driven
    •  HT thermostat, not powered and separate
    •  Engine preheating equipment, fitted on base frame
  • Lubricating Oil System
    •  Plate cooler, fitted on engine
    •  Force pump, fitted on engine
    •  Prelubrication pump, fitted on base frame, electric motor driven
    •  Boll and Kirch automatic backflushing filter, separate
    •  Duplex filter with differential pressure indication, separate
    •  Pressure control valve, separate
    •  Thermostat, not powered, separate
  • Connecting Parts - Engine
    •  Set of connecting parts between flange coupling and flywheel
    •  Flexible flange coupling between engine and generator
    •  Base frame with flywheel guard and incorporating lube oil sump tank, for engine and generator
    •  Mounting of engine and generator on the base frame
    •  Set of bonded rubber rails for resilient mounting of the base frame
    •  Set of flexible pipe connections
  • Tools
    •  Set of tools for turbocharger
    •  Set of tools for turbocharger
    •  Inside micrometer for cylinder liners
    •  Ruler for cylinder liner
  • Spare Parts
    •  Set of engine spare parts for unrestricted operation
    •  Set of spare flexible pipe connections
Catepillar Equipments