What type of oil is commonly used on-board ships for steam turbines?

The use of 2190 oil on board ships for steam turbines is due to its specific properties that make it well-suited for the high-temperature and high-pressure environments found in these systems. 2190 oil, also known as turbine oil or steam turbine oil, is formulated to provide excellent lubricating qualities, stability under thermal stress, and protection against oxidation and corrosion.

This oil is designed to maintain its viscosity over a wide range of temperatures, ensuring that the turbine components remain well-lubricated and operate efficiently. It also helps in dissipating heat generated during operation and protects the intricate machinery from wear and tear.

In the context of a ship's engineering systems, utilizing the appropriate lubricant is critical for ensuring the reliability and longevity of the machinery, which is why 2190 oil is the preferred choice for steam turbines.