Large ship engines are powerful propulsion systems, typically diesel or gas turbines, designed for maritime vessels. Key engine parts include the crankshaft, pistons, cylinders, turbochargers, and fuel injection systems. These components work together to convert fuel into mechanical energy, enabling efficient and reliable ship operation.

Large Ship Engine Specifications:

- Size: Typically 10-15 meters in length, 5-8 meters in height, weight up to 2,300 tons.

- Grade: Marine-grade diesel (ISO 8217 compliant), often high-viscosity residual fuels (HFO) or distillates (MDO/MGO).

- Viscosity: 180-700 cSt at 50°C for HFO, 2-15 cSt at 40°C for MDO/MGO.

- Buoyancy: Not applicable (engine is fixed within the ship's hull).

- Material: Cast iron or steel for engine blocks; alloy steel for crankshafts; aluminum or titanium for lightweight components.

Engine Parts Specifications:

- Pistons: Aluminum alloy or steel, diameter up to 1 meter.

- Cylinder Liners: Cast iron or chromium-plated steel, thickness 20-50 mm.

- Crankshaft: Forged steel, length up to 10 meters, weight up to 300 tons.

- Bearings: White metal (Babbitt) or bronze alloys.

- Turbochargers: Nickel-based superalloys, operating at 10,000-30,000 RPM.

- Cooling Systems: Copper-nickel or titanium heat exchangers.