The COASTAL DRILLER is loaded as shown in...

Question 1 / 2707066636ee728f7522a1c51772b

Question 1 of 2707066636ee728f7522a1c51772b

The COASTAL DRILLER is loaded as shown in the Sample Load Form #1 (Rig Move). While in field transit, the wind speeds are predicted to increase above 70 knots. What would be the change in KGL if the legs are lowered to the recommended value?

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Question 1 of 27070

🔍 Key Concepts

• KGL on the Sample Load Form #1 (what it represents and where it is listed) • Effect on vertical center of gravity (KG) when very heavy weights (like jack-up legs) are moved downward or upward • How to calculate a change in KG/KGL when a weight is shifted: initial value vs. final (recommended) value

💭 Think About

• On Sample Load Form #1, identify the KGL value for the legs in their original (shown) position and then the KGL after they are lowered to the recommended field-transit position. What happens to KGL when the legs go down? • When calculating a change in KGL, are you being asked for the new KGL itself, or the difference between the original and recommended KGL values? How would you compute that difference numerically? • Which choices look more like a realistic change in KGL for a jack-up rig (moderate few feet vs. very large tens of feet)? How does that help narrow the options?

✅ Before You Answer

• Locate both the initial KGL and the recommended KGL on Sample Load Form #1 before doing any math. • Confirm whether the problem wants ΔKGL (change in KGL), not just the final KGL. Make sure you are subtracting in the correct order: recommended minus initial. • Double‑check that your computed change is in feet, and ask whether a change of nearly 60 feet in KGL is physically reasonable for this leg movement.

Question 1 of 27070

12.75 feet

13.65 feet

59.30 feet

60.50 feet

Question 1 / 2707066636ee728f7522a1c51772b

Question 1 of 2707066636ee728f7522a1c51772b

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Question 1 of 27070