🔍 Key Concepts

• Review the vessel’s operating manual or stability booklet for standard time estimates to shift from drilling draft to survival draft • Understand what survival draft means for a MODU (Mobile Offshore Drilling Unit) in heavy weather conditions • Consider operational steps: securing operations, ballasting, disconnecting riser, and preparing for heavy weather

💭 Think About

• Which of these time options seems realistic when you think through all the steps needed to move from drilling mode to survival draft? • Does industry practice for similar units usually plan this transition as something very quick, or as a more extended, carefully controlled evolution? • How would sea state and safety margins influence the planned (not emergency) time required to reach survival draft?

✅ Before You Answer

• Check typical planning assumptions in MODU emergency procedures or heavy-weather manuals for going to survival draft • Verify whether the time is meant for planning purposes (conservative estimate) rather than absolute minimum possible time • Consider that placing a unit at survival draft includes more than just ballasting—all securing and safety steps must be included in the time estimate