Freezing salt water spray should be anticipated when the air temperature drops below what temperature?

Correct Answer: Option B — 28°F (-2.2°C)

Due to dissolved salts lowering the freezing point of seawater, freezing spray typically begins accumulating on superstructures when air temperatures drop to 28°F (-2.2°C) or lower, posing a severe vessel stability hazard per stability and meteorology standards.