In the marine gas turbine engine shown in the illustration, the 9th stage bleed air is used for __________. Illustration GT-0017

Correct Answer: Option C — power turbine cooling

Ninth-stage compressor bleed air is extracted and routed to the power turbine section. This air provides essential cooling for the turbine components, preventing thermal degradation of the blades and vanes while maintaining structural integrity during high-load operations in the marine gas turbine environment.