What is the normal operating capacity of the LO sumo on the port side?

• A. 1,800 GAL
• B. 1,700 GAL
• C. 1,752 GAL
• D. 1,747 GAL

Answer: (C)

The number asked for is the amount of oil the lubrication system sump on the port side is designed to hold during normal operation. This normal operating capacity reflects the sump’s actual size and the system’s flow rundowns, ensuring there’s enough oil to keep the bearings and pumps lubricated during steady operation, startup, and transient conditions, while still fitting within safe temperature and pressure limits.

For the port side LO sump, that specified capacity is 1,752 gallons. This value comes from the design and layout of the oil system, and it’s used as the reference when gauging oil inventory, planning top-offs, and ensuring the pump pickup stays submerged so oil pressure remains reliable. In practice, you’d maintain oil levels within the established range around this capacity to prevent starvation during high demand or aeration from overfilling.