🔍 Key Concepts

• Ballast system design on DEEP DRILLER (which pumps are specifically designated for ballast tanks) • Difference between ballast pumps vs. service/drill water pumps and what they are normally used for • Effect of minor hull damage on how aggressively you pump and from where

💭 Think About

• Look at which pumps are directly connected to lower-hull tank 1P in the ballast piping diagram—are all four normally used, or only a subset? • Ask yourself why the question specifies minor damage and in transit; would that call for maximum pumping capacity or controlled, limited pumping? • Consider whether it is appropriate to use non‑ballast pumps (saltwater service or drill water) on the ballast system in a damage-control situation for a single tank

✅ Before You Answer

• Verify in the DEEP DRILLER ballast system description which pumps are approved/arranged for ballast operations from a single wing tank • Check whether the service pump or drill water pump are actually cross-connected and authorized for pumping ballast from lower-hull tanks • Confirm whether procedures for minor damage control emphasize controlled deballasting from the affected side rather than using maximum overall pumping capacity