What is the purpose of purifiers on board?

The primary purpose of purifiers on board a vessel is to separate impurities from fuel and lubricating oil. These impurities can include water, sludge, and other contaminants that can negatively impact engine performance and efficiency. By effectively removing these unwanted materials, purifiers help ensure that the fuel and lubricating oil are clean and of high quality, which is essential for optimal operation of the engine and other machinery. This not only extends the life of the engine but also enhances its efficiency and reduces harmful emissions. Therefore, purifiers play a critical role in maintaining the overall functioning and reliability of the vessel's systems. The other choices do not accurately reflect the function of purifiers, as they are specifically designed for filtration rather than cooling, power provision, or communication enhancements.