The DEEP DRILLER is drilling on location at...

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Question 1 of 2066636ee728f7522a1c5178a0

The DEEP DRILLER is drilling on location at a 60 foot draft. Waves are approaching within 2 feet of the underside of the spider deck. You should __________.

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Question 1 of 20

66636ee728f7522a1c5178a0

The DEEP DRILLER is drilling on location at a 60 foot draft. Waves are approaching within 2 feet of the underside of the spider deck. You should __________.

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🔍 Key Concepts

• Air gap on a mobile offshore drilling unit (MODU): distance between the water surface (including waves) and the underside of the working deck/spider deck • How ballasting and de-ballasting affect draft (more ballast = deeper draft, less ballast = shallower draft) and therefore air gap • Safe operating limits when waves are approaching versus actually striking the underside of the deck/structure

💭 Think About

• How does changing from a 60-foot draft to a different draft affect the air gap if the wave height stays the same? Think through whether you need a deeper or shallower draft to increase clearance under the spider deck. • Is it safer to act before waves hit the underside of the spider deck, or to wait until they are already making contact? Which option best reflects a conservative safety margin? • What effect would reducing tension on anchor chains have on the rig’s vertical position and motion? Would that help maintain or increase the air gap?

✅ Before You Answer

• Verify which answer choices would increase the air gap between the wave crests and the underside of the spider deck, and which would decrease it. • Check which options imply taking action proactively (before contact) versus reactively (after waves hit). • Confirm that the selected option does not intentionally allow waves to impact the underside of the deck or reduce structural clearance.

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Question 1 of 2066636ee728f7522a1c5178a0

The DEEP DRILLER is drilling on location at a 60 foot draft. Waves are approaching within 2 feet of the underside of the spider deck. You should __________.

Back

Question 1 of 20

66636ee728f7522a1c5178a0

The DEEP DRILLER is drilling on location at a 60 foot draft. Waves are approaching within 2 feet of the underside of the spider deck. You should __________.

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