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The 6CM46DF 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 6CM46DF 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.

Engine Specifications

Minimum Rating 7020.0 kVa 5616.0 ekW Less
Maximum Rating 7020.0 kVa 5616.0 ekW Less
Emissions IMO Tier II IMO Tier II Less
Aspiration Turbocharged-Aftercooled Turbocharged-Aftercooled Less
Engine Control Electronic Electronic Less
Weight 340200.0 lb 170001.0 kg Less
Stroke 24.0 in 610.0 mm Less
Bore 18.1 in 460.0 mm Less
Displacement 608.0 L 608.0 L Less


Length 503.9 in 12800.0 mm Less
Width 133.1 in 3382.0 mm Less
Height 287.0 in 7281.0 mm Less

Engine Design

-World-class reliability and durability - Incorporates years of proven component reliability and - durability in marine industry - Medium speed long-stroke engine design - Ideal configuration for dynamically positioned semisubmersible rigs and drillships - Compact cylinder head design - Nodular cast-iron block with integrated ducts for lubricating oil and charge air - Segmental camshaft design - 25° tilt capability in all directions - Engine design based on the higher requirements of heavy fuel oil - High efficiency turbocharger - Cylinder liner, only cooled outside the engine block - Engine control terminal with analog instrumentation in robust cast casing - Connecting rod, split off design - Compact module for lower valve drives and injection pump drives with cam followers - Optional Flexible Camshaft Technology (FCT)

Ease of Installation

- Standard modular design allows for ease of installation and reduced complexity - Installation-friendly, due to pumps and filters installed on the engine - Cooling water system with simple plug-in connections - Full range of factory-installed engine attachments allows customization and reduction in installation time

Packaging Concept

- Assembled, tested, and validated as a package to minimize package vibration and maximize component life

Improved Serviceability

- Large inspection openings allow for convenient access to core engine internals for easier serviceability - Core engine components designed for reconditioning and reuse at overhaul - Worldwide dealer network with factory-trained technicians means that parts and support are never out of reach - Simplified parts spectrum by using single-pipe exhaust gas ducting

6CM46DF Standard Equipment

  • Motor-driven barring gear, fitted on engine
  • Reversing contractor and push button 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

  • 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:
  • Switches for:
  • Control Cabinet with housings for wall mount

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