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3512C

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3512C

Overview

The Cat® 3512C commercial propulsion engine is designed for hard-working marine applications where reliability, fuel efficiency and emissions compliance are critical. With a wide range of ratings, advanced electronic controls and a proven V12 platform, the 3512C delivers dependable performance for tug, governmental and other workboat applications

3512C IMO II Commercial Propulsion Engines

3512C IMO II Commercial Propulsion Engines

3512C IMO II Commercial Propulsion Engines

3512C IMO II Commercial Propulsion Engines

3512C IMO II Commercial Propulsion Engines

3512C IMO II Commercial Propulsion Engines

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Robust V12, 4-stroke diesel platform engineered for sustained high-load propulsion and continuous duty cycles across diverse commercial vessel platformsRobust V12, 4-stroke diesel platform engineered for sustained high-load propulsion and continuous duty cycles across diverse commercial vessel platforms.
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Available in multiple ratings and speed configurations to match vessel duty profiles and mission requirement.
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Optimized fuel delivery and combustion performance help maximize operating efficiency across a range of vessel duty cycles.
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Updated electronic controls meet IACS UR E29/E27 requirements for cyber security.
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No aftertreatment required for IMO II, reducing system complexity, weight and installation footprint.
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Broad power range with standard rotation and reverse rotation options to simplify vessel integration and repower projects.
Application
Workboat
Speed Range
1200 – 1800 rpm
Emissions
IMO II, China II
Aspiration
Twin Turbocharged Aspirator
Bore
6.69in
Stroke
7.48in
Stroke – HD
8.46in
Displacement
3161in³
Displacement – HD
3574in³
Rotation from Flywheel End
Counterclockwise or Clockwise
Configuration
V 12, 4-Stroke-Cycle Diesel
Length – Engine
111.1in
Maximum Length
102in
Maximum Width
80.2in
Minimum Dry Weight
14400lb
Minimum Width
80.2in
Minimum Height
75in
Minimum Length
102in
Maximum Height
75in
Maximum Dry Weight
17866lb
Power Range
1281 – 2552 bhp
  • Air Inlet System
    • Separate circuit aftercooler core, corrosion resistant coated (air side)
    • Powercore air cleaner
  • Control System
    • Dual Caterpillar A6 Electronic Engine Control with Electronic Unit Injector Fuel System
    • Rigid Wiring Harness (20 amp DC power required to drive Electronic Engine Control Module)
  • Exhaust System
    • 3500C engines:
  • Fuel System
    • Fuel transfer pump
    • Electronically Controlled Unit Injectors
    • Duplex Fuel Filters
  • Instrumentation
    • Electronic service meter, instrument panel (24V), start/stop switch, emergency stop button, maintenance due light, diagnostic light, warning light, maintenance clear switch, start motor magnetic switch, 15 and 3A breakers
    • Graphical Unit (Color Marine Power Display) for analog or digital of:
  • Lube System
    • Crankcase breather groups, Top mounted
    • Oil filler and dipstick, LH or RH
    • Oil pump, gear type
    • 250 / 500 / 1000 hour sump oil pan options
  • Mounting System
    • Rails, engine mounting, ledge type, 203 mm x 203 mm (8 in x 8 in) or Front Trunnion
  • Power Takeoffs
    • Accessory drives: Lower RH, lower LH
    • Front housing, two-sided
  • Protection System
    • A6 Electronic Monitoring System provides customer programmable engine derating strategies to protect against adverse operating conditions
    • Emergency stop push button (located in Electronic Instrument Panel)
    • Safety shutoff protection:
  • General
    • Vibration damper and guard
    • Lifting eyes
    • NOTE: Engines for heat exchanger cooling do NOT include heat exchange
  • Flywheel And Flywheel Housing
    • Flywheel, SAE No. 00, 183 teeth
    • Flywheel housing, SAE No. 00, 183 teeth
  • Cooling System
    • Oil cooler
    • Thermostats and housing, Full open temperature 92 C (198 F)
    • Jacket water pump, gear driven, centrifugal
    • Auxiliary fresh water pump
    • Aftercooler system: If using glycol, up to maximum 20% glycol concentration is allowed
  • Air Inlet System
    • Air Inlet Adapters
  • Charging System
    • Battery Chargers
    • Charging Alternator 24V/60amp
  • Control System
    • Throttle Control
  • Cooling System
    • Coolant Shunt Tank
    • Cooling System Options
  • Exhaust System
    • Flexible Fittings
    • Elbows, Flexible Fittings, and Flanges for exhaust connections
    • Flanges
    • Flange and Exhaust Expanders
    • Mufflers
  • Fuel System
    • Fuel Cooler Heat Exchanger – Sea Water
    • Primary Fuel Filter
    • Fuel Level Switch
    • Rigid Fuel Lines
    • Flexible Fuel Lines
  • Instrumentation
    • Communication Modules
    • Color Marine Power Display System equipped with access to Marine Digital Services
    • Pilot House Instrument Panels
    • Marine Gear Sensors
  • Lube System
    • Sump Pumps
    • Lubricating Oil
  • Power Take-offs
    • Stub Shafts
    • Crankshaft Pulleys
    • Damper Guard
    • Flexible Coupling and Guards
  • Marine Society Requirements
    • Green Passport Documentation
    • Spray Shielding
  • Protection System
    • Shutoff and Alarm Contactors
  • Special Appearance Packages
    • Special Appearance Packages with Chrome Covers
    • Yacht Class Finish
  • Starting System
    • Air Starting Motor Options
    • Battery Sets – 24 Volt – Dry
    • Battery Rack
  • Mounting System
    • Engine Supports
    • Vibration Isolation Mountings
  • Packing
    • Shrink Wrap Protection
    • Storage Preservation with Glycol Solution/Vapor Corrosion Inhibitor
    • Export Boxing
    • Export Packaging

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3512C

Application
Workboat
Speed Range
1200 – 1800 rpm
Emissions
IMO II, China II
Selected Model

C9.3

Power Range
200 – 300 ekW
Frequency
50 / 60
Emissions/Fuel Strategy
IMO II, IMO III, U.S. EPA Tier 3, China II
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