Question 332 Deck Safety

The correct answer is C) MNO. This code refers to the International Code of Signals (INTERCO) and indicates "My ship has a person on board who is blind in both eyes." This is the appropriate code to use in a message when a crew member suddenly becomes blind in both eyes, as it clearly communicates the situation to other vessels or authorities. The other answer choices are incorrect because they do not specifically indicate blindness in both eyes. MNI, MNJ, and MNM have different meanings related to medical or navigational issues, but do not convey the specific condition of the crew member described in the question.