Coast Guard Exams
Question 3493Deck General70% to pass

What pressure must a spring buoy, moored at a 500 foot depth, withstand?

AI Explanation
The correct answer is C) 225 psig. At a depth of 500 feet, the pressure that the spring buoy must withstand is equal to the hydrostatic pressure at that depth. The formula for calculating hydrostatic pressure is: Pressure (in pounds per square inch, or psig) = Depth (in feet) x 0.445. Plugging in the depth of 500 feet, the calculated pressure is 500 x 0.445 = 225 psig. The other options are incorrect because they do not accurately reflect the hydrostatic pressure at a 500-foot depth. Option A (100 psig) is too low, Option B (150 psig) is also too low, and Option D (300 psig) is too high.

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