🔍 Key Concepts

• Reduction gear sump function and what normally drains or leaks into it • Difference between water-side vs oil-side leaks in coolers and seals • Typical sources of fresh water vs. seawater contamination in lube oil systems

💭 Think About

• Which of these components actually has lube oil on one side and fresh water on the other, with the sump being the collection point if a barrier fails? • If a component failed, would it more likely introduce seawater, condensate/steam, or fresh cooling water into the gear sump? • Which option is most directly connected to the reduction gear lubrication system, rather than general steam or condenser systems?

✅ Before You Answer

• Identify which choice is physically connected to the reduction gear lube oil system • Determine which item uses fresh water as a cooling medium in close contact with lube oil • Eliminate any options that would primarily introduce seawater or steam/condensate rather than fresh water into the sump