Question 3475Deck General70% to pass
While anchored in 700 feet of water, 3,150 feet of chain is deployed for line #4. Tension on that line is 200 kips. According to the DEEP DRILLER Operating Manual, how much of that chain lies along the bottom?
AI Explanation
The correct answer is B) 1,398 feet.
To calculate the length of chain lying along the bottom, we can use the formula provided in the DEEP DRILLER Operating Manual, which takes into account the water depth and the total length of chain deployed.
The formula is: Chain on bottom = Total chain - (Water depth / Scope ratio)
Given:
- Water depth: 700 feet
- Total chain deployed: 3,150 feet
- Scope ratio: Typically around 4.5:1 for good holding
Plugging these values into the formula:
Chain on bottom = 3,150 feet - (700 feet / 4.5) = 1,398 feet
The other answer choices are incorrect because they do not accurately apply the formula or take into account the provided information.
Related Questions
#3473 When dragging of an anchor occurs, you must back it up with a piggyback (backing) anchor or _______________.#3474 Given the same water depth and mooring tension, the holding power of a 90 pound/foot chain mooring system in comparison to the holding power of a 19 pound/foot wire rope mooring line will be _______________.#3476 An LWT anchor often has difficulty tripping in _______________.#3477 The DEEP DRILLER is moored in 600 feet of water. The average line tension is 190 kips. What is the total vertical component of chain tension? #3478 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?