Which spoken emergency signal would you use to call a boat to come assist a man overboard?()
A、A.Distress signal
B、B.Urgency signal
C、C.Safety signal
D、D.None of the above
A、A.Distress signal
B、B.Urgency signal
C、C.Safety signal
D、D.None of the above
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、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、Directing the beam of a searchlight at another vessel B、A smoke signal giving off orange colored smoke C、A whistle signal of one prolonged and three short blasts D、International Code Signal "PAN" spoken over the radiotelephone
A、A.Directing the beam of a searchlight at another vessel B、B.A smoke signal giving off orange colored smoke C、C.A whistle signal of one prolonged and three short blasts D、D.International Code Signal PAN spoken over the radiotelephone