While in ocean transit, the COASTAL DRILLER...

Question 1 / 2066636ee728f7522a1c518447

Question 1 of 2066636ee728f7522a1c518447

While in ocean transit, the COASTAL DRILLER has a roll period of four seconds. What would be the largest angle each side of vertical that does not exceed the design limit of the legs?

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Question 1 of 20

66636ee728f7522a1c518447

While in ocean transit, the COASTAL DRILLER has a roll period of four seconds. What would be the largest angle each side of vertical that does not exceed the design limit of the legs?

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🔍 Key Concepts

• Relationship between roll period and metacentric height (GM) for a vessel in ocean transit • How to estimate maximum safe roll angle so that structural limits (like jack-up legs) are not exceeded • Typical range of roll angles for a relatively stiff vessel (short roll period) in a seaway

💭 Think About

• Given a roll period of 4 seconds, is the vessel relatively stiff (large GM) or tender (small GM)? How does that affect expected roll angles? • Think about what kind of roll angle would start to create high loads on the legs of a jack‑up rig in transit. Would the design limit likely be very small, moderate, or very large? • Compare the choices: which angles would be realistic as an operational limit for a stiff unit with sensitive structural members (legs)?

✅ Before You Answer

• Confirm that a shorter roll period generally corresponds to larger GM and smaller roll angles in a given sea state • Consider that jack‑up legs in transit are not meant to take large dynamic bending moments, so the allowed angle is usually conservative • Rule out any option that would clearly be too comfortable or too extreme for a structural design limit in ocean transit

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Question 1 of 20

While in ocean transit, the COASTAL DRILLER has a roll period of four seconds. What would be the largest angle each side of vertical that does not exceed the design limit of the legs?

6.3 degrees

5.0 degrees

3.5 degrees

2.0 degrees

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Question 1 / 2066636ee728f7522a1c518447

Question 1 of 2066636ee728f7522a1c518447

While in ocean transit, the COASTAL DRILLER has a roll period of four seconds. What would be the largest angle each side of vertical that does not exceed the design limit of the legs?

Back

Question 1 of 20

66636ee728f7522a1c518447

While in ocean transit, the COASTAL DRILLER has a roll period of four seconds. What would be the largest angle each side of vertical that does not exceed the design limit of the legs?

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed