On some marine gas turbine reduction gear arrangements, the reduction gear lube-oil supply pump may also supply oil to which of the following components?

Correct Answer: Option A — Main lube oil supply filter.

In many marine reduction gear designs, the lube oil system is integrated to provide filtered oil to the gear mesh and bearings. The supply pump often routes oil through the main lube oil supply filter before distribution to ensure that contaminants are removed prior to reaching critical gear components.