🔍 Key Concepts

• Bilge pump suction and discharge line-up on a drilling unit like DEEP DRILLER • Difference between individual pump suction valves and common manifold / overboard / discharge valves • How the starboard pump room bilge well connects into the bilge system piping

💭 Think About

• Look at the bilge system diagram: which valves are needed so that BOTH bilge pumps can take suction from the starboard pump room bilge? • Which valves only affect one pump, and which ones affect the common suction or discharge lines? • Ask yourself: if only some of these valves were open, would both pumps actually be able to draw from the same bilge source and discharge overboard or to the bilge holding tank?

✅ Before You Answer

• Verify which numbered valves are suction isolating valves for each bilge pump. • Verify which numbered valves are common manifold / crossover valves that must be open for both pumps to share the same bilge source. • Confirm whether additional valves (like 26 and 28) are part of the overboard or discharge path, and if they are required in addition to the local pump-room valves for this specific operation.