Question 75General Subjects - 1st Asst/Chief

The correct answer is B) The activation of the salinity monitoring equipment's annunciator circuit. A large condenser tube leak within the distiller would allow seawater to mix with the distillate, increasing the salinity of the distilled water. This would trigger the salinity monitoring equipment's annunciator circuit, indicating the leak. The other options are incorrect because: A) A slow rise in the lube oil cooler temperature would not directly indicate a condenser tube leak. C) A decrease in the main engine expansion tank level is not related to the distiller operation. D) An increase in distiller output is not a reliable indicator of a condenser tube leak.