Exam Question

### Part (a): Types of Lubrication Systems in Marine Machinery
Onboard marine main and auxiliary machinery, lubrication is not a single concept but is achieved through different principles or regimes depending on the specific components, their relative speeds, loads, and operating conditions. The primary systems and underlying principles are categorized as follows:
**1. Hydrodynamic Lubrication (Full Film Lubrication):**
This is the most desirable form of lubrication, where the moving surfaces are completely separated by a continuous, pressurized film of lubricating oil. The pressure within the film is self-generated by the relative motion of the surfaces.