A.red flares B.smoke signals C.sound signals D.Any of the above
A.vessel not under command B.sailing vessel C.vessel in distress D.vessel being towed
A.A continuous sounding with any fog signal apparatus B.A signal sent by radiotelephone consisting of the spoken word "Mayday" C.An International Code Signal of N.C. D.The firing of green star rockets or shells
A.straight overhead B.at the vessel whose attention you are trying to get C.into the wind D.about 60 degrees above the horizon
A.danger，stay away B.all is clear，it is safe to pass C.all is clear，it is safe to approach D.a distress signal
A.a green star signal B.orange-colored smoke C.red flares D.the repeated raising and lowering of outstretched arms
A.Distress and alarm signals transmitted or intercepted B.Times of beginning and end of watch period C.Routine navigational traffic D.Daily statement about the condition of the required radiotelephone equipment
A.horizontal motion of a white flag B.letter K in Morse code given by light C.code flag S as a hoist D.firing of a white star signal
A.Send a DSC cancellation message on Ch-70 B.Make a voice announcement to cancel the alert on Ch-16 C.Make a voice announcement to cancel the alert on Ch-13 D.Make a voice announcement to cancel the alert on Ch-22A
A.consists of 5 or more short blasts of the fog signal apparatus B.consists of the raising and lowering of a large white flag C.may be used separately or with other distress signals D.is used to indicate doubt about another vessel's intentions
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