Considering the changes to lightweight shown...

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Question 1 of 2066636ee728f7522a1c5177de

Considering the changes to lightweight shown in Section 5 of the COASTAL DRILLER Manual, with the rotary 36 feet aft of the transom and 4 feet to port of the centerline, and with 300 kips in the setback, the maximum hook load is limited to __________.

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Question 1 of 20

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🔍 Key Concepts

• Lightweight displacement vs. variable load and how changes to lightweight affect allowable hook load • How longitudinal and transverse centers of gravity (LCG/TCG) shift when weight is added at an offset location (36 ft aft, 4 ft port) • Use of the COASTAL DRILLER stability manual tables/curves in Section 5 to find maximum permissible hook load for given setback load and rotary position

💭 Think About

• From Section 5, identify which table or curve corresponds to: rotary 36 ft aft of the transom, 4 ft to port, and 300 kips in the setback. What does that specific condition limit? • How does adding 300 kips in the setback change the remaining capacity for hook load before you reach the limiting stability or structural condition? • Compare the resulting maximum allowable hook load from the manual to the multiple-choice options—does the value match one of them directly, or is there an interpolation step?

✅ Before You Answer

• Confirm you are looking at the correct rotary position (36 ft aft) and offset (4 ft port) in the manual’s tables/figures • Verify that the 300-kip setback load has been included before reading the allowable hook load from the curve/table • Make sure you are using the limiting condition specified in Section 5 (e.g., stability, trim, or structural limit) and not a different design limit from another section

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