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單項選擇題

If your vessel is underway in fog and you hear one prolonged and three short blasts，this indicates a（）.

A.vessel not under command
B.sailing vessel
C.vessel in distress
D.vessel being towed

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單項選擇題

If you log a distress message，it must include the（）.

A.sea state
B.names of witnesses
C.time of its occurrence
D.wind direction and velocity

單項選擇題

If you are transmitting a distress message by radiotelephone you should（）.

A.use English language
B.always use the International Code
C.preface it by the word "Interco"
D.follow the transmission with the radio alarm signal

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