Which description correctly lists the capacity in gallons for the port and starboard Main Reduction Gear lube oil sumps?

• A. 1,750 / 1,745 gallons
• B. 1,800 / 1,700 gallons
• C. 1,700 / 1,745 gallons
• D. 1,752 / 1,747 gallons

Answer: (D)

Understanding lubrication system capacity is about knowing the exact oil volumes the sumps hold so you can manage fill levels and maintenance correctly. For the main reduction gear lube oil sumps, the port side holds 1,752 gallons and the starboard side holds 1,747 gallons. This small difference comes from the physical design and internal baffling, and it ensures each gear has adequate oil under normal operation and during priming. The other figures don’t match the official specifications, so using them would misstate the actual oil inventory and could affect level checks and maintenance planning.