While on a normal tow, the COASTAL DRILLER...

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Question 1 of 20673956e598d45f16831b6db7

While on a normal tow, the COASTAL DRILLER is threatened with the approach of a severe storm. Including the time required to place the generators on-line, the approximate time required to lower the legs from a TOC (tip-of-can) position of 1.20 feet to 60.50 feet is __________.

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🔍 Key Concepts

• Leg lowering rate from TOC position (feet per minute) on a jack-up rig like COASTAL DRILLER • Total change in leg penetration from 1.20 ft to 60.50 ft • Any fixed time added for bringing generators on-line before leg movement begins

💭 Think About

• What is the total distance (in feet) that the legs must be lowered from the initial TOC position to the final penetration? • Once you know the normal lowering rate (feet per minute), how do you use time = distance ÷ rate to estimate the leg-lowering time? • How does the startup time for placing generators on-line affect the total time you should choose from the options?

✅ Before You Answer

• Carefully subtract initial TOC depth (1.20 ft) from final depth (60.50 ft) to get the distance • Confirm the leg lowering rate given elsewhere in the exam booklet or reference sheet (usually in ft/min) • Remember to add generator startup time (if specified) to the computed lowering time before comparing to the answer choices

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