What type of main lube oil supply and scavenging pump is installed on the marine gas turbine engine shown in the illustration? Illustration GT-0017

Correct Answer: Option C — Vane.

Vane-type pumps are commonly utilized in gas turbine lubrication systems due to their ability to provide a consistent, non-pulsating flow of oil at high pressures. These positive displacement pumps are reliable for scavenging and supply duties, ensuring critical components remain lubricated under varying operational speeds and loads.