Question 306 Deck Safety

The correct answer is D) OK. When signaling by flashing light, the correct way to acknowledge a correctly received repetition of a signal is to respond with "OK". This is the standard procedure outlined in the regulations governing the use of visual signaling by the US Coast Guard. The other answer choices are incorrect because: A) AR is used to indicate "end of message", B) T is the Morse code for the letter "T" and not a standard acknowledgment signal, and C) E is the Morse code for the letter "E" and also not a standard acknowledgment.