Using the available references, if the dry bulb temperature is 76° and the wet bulb temperature is 58°, what is the relative humidity in a cargo hold?
Official USCG Answer & Rule Citation
Correct Answer: Option A — 31%
Entering psychrometric tables with a dry bulb temperature of 76°F and a wet bulb temperature of 58°F results in a relative humidity reading of 31%, indicating a dry atmosphere safe from sweat damage.
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