單項選擇題You can indicate that your vessel is in distress by（）.

A.displaying a large red flag
B.displaying three black balls in a vertical line
C.sounding four or more short rapid blasts on the whistle
D.continuously sounding the fog whistle


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1.單項選擇題When you are firing a pyrotechnic distress signal，it should be aimed at（）.

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

2.單項選擇題How is “radio silence” imposed?（）

A.By the On Scene Coordinator (OSC)
B.By the Coast Earth Station (CES) controlling the distress communications on that frequency
C.It is imposed by the Public Correspondence Station (PCS) controlling the distress communications on that frequency or channel
D.It is imposed by the High Seas Service (HSS) controlling the distress communications on that frequency or channel

3.單項選擇題What is NOT a distress signal?（）

A.Red flares or red rockets
B.Continuous sounding of fog signaling apparatus
C.International Code Flags "November" and "Charlie"
D.Basket hanging in the rigging

4.單項選擇題Distress signals may be（）.

A.red flares
B.smoke signals
C.sound signals
D.Any of the above

5.單項選擇題The service life of distress signals must be not more than（）.

A.forty two months from the date of manufacture
B.thirty six months from the date of the last inspection
C.twenty four months from the date of approval
D.twelve months from the date of purchase

6.單項選擇題The Navigation Rules state that a vessel shall be operated at a safe speed at all times so that she can be stopped within（）.

A.the distance of visibility
B.1/2 the distance of visibility
C.a distance appropriate to the existing circumstances and conditions
D.the distance that it would require for the propeller to go from full ahead to full astern

7.單項選擇題Which signal is recognized as a distress signal?（）

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

8.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

9.單項選擇題Which signal is detected as originating from a SART?（）

A.The Morse code distress series S-O-S repeated 3 times followed by DE and the vessel's call sign
B.A line of blip code on a radar screen outward from the SART's position along its line of bearing
C.A line of blip code on a radar screen inward from the SART's position to its own ship along its line of bearing
D.None of these

10.單項選擇題The signal to guide vessels in distress，which indicates，“This is the best place to land” is the（）.

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