In case of major damage to column C1P while...

🔍 Key Concepts

• Ballast pumping system layout on DEEP DRILLER, especially which pumps are tied to the port‑forward lower‑hull tanks • Difference between ballast pumps, saltwater service pump, and drill water pump (normal purpose and piping connections) • Principles of damage stability and counter-flooding on column-stabilized MODUs (Mobile Offshore Drilling Units)

💭 Think About

• Which pumps are actually connected, by piping, to the port‑forward lower‑hull tanks and can move significant ballast quickly in an emergency? • If column C1P is damaged, what is your primary stability concern: correcting list/trim, avoiding progressive flooding, or supplying process water? How does that affect which pumps you should (and should NOT) rely on? • On this particular unit, are service/drill-water pumps intended as supplementary emergency ballast pumps, or mainly for utility/service water? What does that imply about which answer choices are realistic?

✅ Before You Answer

• Check the DEEP DRILLER ballast and bilge piping diagram to see which pumps are hard‑piped to the port‑forward lower‑hull tanks • Confirm which pumps are designated as ballast pumps versus utility/service pumps in the unit’s operating manual • Verify whether any non‑ballast pumps (saltwater service or drill water) are formally listed as approved supplements for emergency ballasting in the damage-control procedures

In case of major damage to column C1P while the DEEP DRILLER is on location, you should pump from port- forward lower-hull tanks using __________.

saltwater service pump to supplement port-side ballast pumps

both port-side ballast pumps

all four ballast pumps

drill water pump to supplement port-side ballast pumps

🔍 Key Concepts

💭 Think About

✅ Before You Answer