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单选题
In dense fog a vessel without operational radar may not be justified（）at all but should anchor if it is safe and practicable for her to do so.
A
to be underway
B
on under way condition
C
to stop engine
D
in being under way
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Dense fog comes with bad visibility, fog signal bell must be kept ________at regulation intervalsA.to goB.goingC.goesD.go
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In restricted visibility the speed of a vessel without operational radar may be ________ enable effective avoiding action to be taken on sighting another ship．A.too low toB.too high toC.too high forD.too low for
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In dense fog a vessel without operational radar may not be justified ________ at all but should anchor if it is safe and practicable for her to do so．A.to be underwayB.on under way conditionC.to stop engineD.in being under way
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In restricted visibility the safe speed of a vessel without operational radar may be ________ enable effective avoiding action to be taken on sighting another ship．A.too low toB.too high toC.too high forD.too low for
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A vessel is "in sight" of another vessel when ______.A.she can be observed by radarB.she can be observed visually from the other vesselC.she can be plotted on radar well enough to determine her headingD.her fog signal can be heard
考题
Concerning the identification signal for a pilot vessel, in fog, which statement is TRUE?___.A.When at anchor, the pilot vessel is only required to sound anchor signalsB.The identification signal must be sounded any time the pilot vessel is underwayC.The pilot vessel may only sound the identity signal when making wayD.All of the above
考题
In fog you observe your radar and determine that risk of collision exists with a vessel which is 2 miles off your port bow. You should ______.A.stop your enginesB.sound the danger signal at two-minute intervalsC.hold course and speed until the other vessel is sightedD.take avoiding action as soon as possible
考题
单选题Concerning the identification signal for a pilot vessel，in fog，which statement is TRUE?（）A
When at anchor，the pilot vessel is only required to sound anchor signalsB
The identification signal must be sounded any time the pilot vessel is underwayC
The pilot vessel may only sound the identity signal when making wayD
All of the above
考题
单选题You hear the fog signal of another vessel forward of your beam.Risk of collision may exist.You MUST（）.A
Reduce speed to bare steeragewayB
Stop your enginesC
Begin a radar plotD
All of the above
考题
单选题You are underway in thick fog. You have not determined if risk of collision exists. Which statement is TRUE?（）.A
Your speed must be reduced to bare steeragewayB
A look-out is not required if the radar is onC
Fog signals are only required when a vessel is detected by radarD
The radar should always be kept on a short-range scale
考题
单选题There is a possibility that small vessel，ice and other floating objects may not be（）by radar at an adequate range.A
reflectB
shownC
detectedD
defected
考题
单选题Which vessel is the stand-on vessel when two vessels crossing in fog are NOT in sight of one another（）.A
The vessel which has the other on her own starboard sideB
The vessel which has the other on her own port sideC
The one which hears the other's fog signal firstD
Neither vessel is the stand-on vessel
考题
单选题Which statement is true concerning a vessel equipped with operational radar?（）.A
The Master of the vessel must be on the bridge when the radar is in useB
The radar equipment is only required to be used in restricted visibilityC
The use of a radar excuses a vessel from the need of a look-outD
This equipment must be used to obtain early warning of risk of collision
考题
单选题Which statement concerning the operation of radar in fog is TRUE?（）A
Radar ranges are less accurate in fogB
Navigation buoys will always show up on radarC
A sandy beach will show up clearer on radar than a rocky cliffD
Small wooden boats may not show up on radar
考题
单选题What is TRUE when operating in fog and other vessels are detected by radar?（）A
you should make an ample change to port for a vessel crossing on the starboard bowB
You should maneuver in ample time if a close-quarters situation is developingC
You should determine the course and speed of all radar contacts at six minutes intervalsD
Long-range scanning will provide early warning of all other vessels within the radar’s range
考题
单选题In fog you observe your radar and determine that risk of collision exists with a vessel which is 2 miles off your port bow. You should（）.A
stop your enginesB
sound the danger signal at two-minute intervalsC
hold course and speed until the other vessel is sightedD
take avoiding action as soon as possible
考题
单选题You are underway in thick fog.You have not determined if risk of collision exists.Which statement is true?（）A
Your speed must be reduced to bare steerage waysB
A look-out is not required if the radar is onC
The radar should always be kept on a short-range scaleD
Fog signals are only required when a vessel is detected by radar
考题
单选题Uncharted lights, fog signals and radar beacon transmissions may be（）near the station.A
encounteredB
metC
contactedD
seen
考题
单选题In restricted visibility the speed of a vessel without operational radar may be（）enable effective avoiding action to be taken on sighting another ship.A
too low toB
too high toC
too high forD
too low for
考题
单选题A vessel is “in sight” of another vessel when（）.A
she can be observed by radarB
she can be observed visually from the other vesselC
she can be plotted on radar well enough to determine her headingD
her fog signal can be heard
考题
单选题Which statement concerning maneuvering in restricted visibility is FALSE?（）.A
A vessel which cannot avoid a close-quarters situation with a vessel forward of her beam shall reduce her speed to bare steeragewayB
A vessel which hears a fog signal forward of her beam shall stop her enginesC
A vessel which hears a fog signal forward of the beam shall navigate with cautionD
If a vessel determines by radar that a close-quarters situation is developing，she shall take avoiding action in ample time
考题
单选题Which statement is TRUE concerning a vessel equipped with operational radar?（）.A
She must use this equipment to obtain early warning of risk of collisionB
The use of a radar excuses a vessel from the need of a look-outC
The radar equipment is only required to be used in restricted visibilityD
The safe speed of such a vessel will likely be greater than that of vessels without radar
考题
单选题When navigating in thick fog with the radar on，you should（）.A
station the look-out in the wheelhouse to keep a continuous watch on the radarB
secure the sounding of fog signals until a vessel closes within five milesC
station a look-out as low down and far forward as possibleD
keep the radar on the shortest available range for early detection of approaching vessels
考题
单选题It is dangerous for vessels without the operational radar（）the estuary.A
to getB
to approachC
to proceedD
to close
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