单项选择题
A.ALWAYS be included in the initial distress message
B.be sent to a Coast Guard station FIRST
C.be transmitted as a series of short messages，if time allows
D.include the vessel's draft
单项选择题 Several merchant ships are arriving at the scene of a distress incident. One of the them must assume the duties of the Coordinator Surface Search (CSS). Which of the following statements is TRUE? （）
单项选择题 If your vessel is underway in fog and you hear one prolonged and three short blasts，this indicates a（）.
单项选择题 If you log a distress message，it must include the（）.