In a pressure type main propulsion turbine lubrication system, the lube oil service pumps normally take suction from the main sump and discharge directly to the __________.

Correct Answer: Option C — lube oil coolers

Positive displacement or centrifugal lube oil service pumps take direct suction from the main reduction gear sump and discharge directly through the lube oil coolers before the oil is distributed to the turbine bearings and gear spray nozzles.