OceanSphereENGINES
Pielstick

12VPC2.5

Main Engine 4-Stroke · Main Engines (4-Stroke)

Technical data from manufacturer or class sources · not yet verified by a person​‍​‍⁠‍​⁠⁠⁠⁠⁠⁠​‍‍‌⁠​‍
12Cylinders
400 mmBore
460 mmStroke

The Pielstick 12VPC2.5 is a 12‑cylinder V‑type, medium‑speed (600 rpm) diesel engine delivering about 8,400 kW of power for main propulsion on large commercial vessels.

Specifications

Technical data.reference — unverified

Do you have the manufacturer datasheet for this model? Send it with the enquiry form — we check it and name the source.

ConfigurationV
Speed (rpm)600
Fuel TypeHFO
TechnologyMechanical
Inspection

Inspector Detail

Common issues

  • Excessive cylinder liner wear due to poor fuel quality or inadequate maintenance
  • Charge air leakage resulting in reduced engine performance and increased fuel consumption
  • Fuel pump failure due to worn or damaged components
  • Crankshaft bearing damage from misalignment or inadequate lubrication
  • Turbocharger fouling or failure from poor maintenance or dirty air filters
  • Exhaust valve issues from overheating or worn valve seats
  • Low compression in one or more cylinders indicating potential piston or ring problems

Inspection checklist

  • Cylinder head and valve condition
  • Piston and ring condition
  • Crankshaft and bearing condition
  • Fuel system cleanliness and function
  • Charge air system for leaks or blockages
  • Turbocharger condition and performance
  • Exhaust system for leaks or damage
  • Lubrication system condition and oil quality
  • Cooling system condition and performance

Service intervals

oil_change1000-1500 hours
fuel_filter_change250-500 hours
air_filter_change500-1000 hours
cylinder_liner_overhaul12000-15000 hours

Typical intervals for this design class, not the manufacturer’s figures for your model. The manufacturer’s manual is binding.

Typical wear limits

cylinder_liner0.5-1.0 mm wear
piston_ring0.5-1.0 mm wear
crankshaft_bearing0.1-0.5 mm wear

Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.

Critical spares

  • Cylinder liners
  • Piston rings
  • Fuel pump components
  • Crankshaft bearings
  • Turbocharger components
  • Exhaust valve spindles and seats

Safety

  • Risk of explosion from fuel or oil leaks
  • Injury from moving parts or hot surfaces
  • Risk of asphyxiation from carbon monoxide or other gases

Class survey

Class surveyor typically checks for compliance with classification society rules and regulations, including verification of maintenance records, inspection of critical components, and review of safety procedures

Estimated lifetime: 30000-40000 hours

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