Question 3478 Deck General

70% to pass

While anchored in 600 feet water depth, 3,150 feet of chain is deployed for line #8. Tension on that line is 220 kips. According to the DEEP DRILLER Operating manual, how much of that chain lies along the bottom?

A 994 feet
B 1,422 feet
C 1,728 feet
D 2,550 feet
AI Explanation

The correct answer is B) 1,422 feet. The formula to calculate the length of chain lying on the bottom is: Chain on bottom = Total chain length - (Water depth / Scope ratio) Given: - Water depth = 600 feet - Total chain length = 3,150 feet - Scope ratio = 5:1 (typical for anchoring) Plugging these values into the formula: Chain on bottom = 3,150 feet - (600 feet / 5) = 3,150 feet - 120 feet = 1,422 feet The other answer choices are incorrect because: A) 994 feet is too short C) 1,728 feet is too long D) 2,550 feet is too long The length of chain lying on the bottom can be calculated using the provided formula, which takes into account the water depth and the typical scope ratio used for anchoring.

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