单选题When navigating in thick fog with the radar on，you should（）.Astation the look-out in the wheelhouse to keep a continuous watch on the radarBsecure the sounding of fog signals until a vessel closes within five milesCstation a look-out as low down and far forward as possibleDkeep the radar on the shortest available range for early detection of approaching vessels
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 radar
B
secure the sounding of fog signals until a vessel closes within five miles
C
station a look-out as low down and far forward as possible
D
keep the radar on the shortest available range for early detection of approaching vessels
参考解析
解析：
暂无解析
相关考题：
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 underwayB.on under way conditionC.to stop engineD.in being under way
A mobile offshore drilling unit under tow is approaching a fog bank. When should fog signals be started?A.When the towing vessel enters the fogB.When the drilling rig enters the fogC.When the towing vessel can no longer be seen from the rigD.Immediately
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
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
The travelers were ready to enjoy the spectacular tidal waves when suddenly a thick fog came up and obscured the whole scene.A:blurred B:belittledC:banned D:collapsed
单选题You are in restricted visibility and hear a fog signal forward of the beam. Nothing appears on your radar screen. You must（）.Astop your enginesBsound two prolonged blasts of the whistleCsound the danger signalDslow to bare steerageway
单选题The SART should provide a（）indication of its correct operation and should also inform survivors when it is interrogated by radar.Asight or soundBseeing or soundingCvisual or audibleDseeing or hearing
单选题You hear the fog signal of another vessel forward of your beam.Risk of collision may exist.You MUST（）.AReduce speed to bare steeragewayBStop your enginesCBegin a radar plotDAll of the above
单选题When vessel enters thick fog, she should sound（）every two minutes in accordance with the rules.Aone short blastBone prolonged blastCtwo short blasts
单选题When your vessel enters thick fog，she should sound（）every two minutes in accordance with these Rules.Aone short blastBone prolonged blastCtwo short blastsDthree short blasts
单选题You are underway in thick fog. You have not determined if risk of collision exists. Which statement is TRUE?（）.AYour speed must be reduced to bare steeragewayBA look-out is not required if the radar is onCFog signals are only required when a vessel is detected by radarDThe radar should always be kept on a short-range scale
单选题The ship should reduce speed in the thick fog because of（）.Athe poor visibilityBthe fog signalsCthe fast speedDthe good sight
单选题When using the ARPA in heavy rain，which action should you take? （）AIncrease the radar gain to pick up weak echoes through the rainBIncrease the STC setting to reduce close-in spurious signalsCNavigate as though the effective range of the radar has been reducedDIncrease the range of the inner and outer guard rings
单选题The term restricted visibility，when used in the Rules，refers to（）.Asituations when you can see vessels on radar that you cannot see visuallyBvisibility of less than half a mileCany condition where visibility is restrictedDvisibility where you cannot see shore
单选题You are underway in restricted visibility and hear a fog signal forward of the beam. Nothing appears on your radar screen. You must（）.Astop your enginesBsound two prolonged blasts of the whistleCsound the danger signalDslow to bare steerageway
单选题The officer of the watch should use radar when appropriate and at all times in（）waters.AcongestingBcongestedCcongestionDcongest
单选题What is TRUE when operating in fog and other vessels are detected by radar?（）Ayou should make an ample change to port for a vessel crossing on the starboard bowBYou should maneuver in ample time if a close-quarters situation is developingCYou should determine the course and speed of all radar contacts at six minutes intervalsDLong-range scanning will provide early warning of all other vessels within the radar’s range
单选题While underway in thick fog you are on watch and hear the cry“man overboard”.Which type of maneuver should you make（）.AFigure eight turnBRound turnCRacetrack turnDWilliamson turn
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.Ato be underwayBon under way conditionCto stop engineDin being under way
单选题Small floes of rough，hummocky sea ice capable of damaging a vessel（）.Acan usually be detected by radar in a smooth sea at a range of 4 to 6 kilometersBare indistinguishable from sea return on the PPICare invisible to radar when covered with a thick layer of snowDare usually seen at night before they are close enough to provide a radar echo
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（）.Astop your enginesBsound the danger signal at two-minute intervalsChold course and speed until the other vessel is sightedDtake avoiding action as soon as possible
单选题You are underway in thick fog.You have not determined if risk of collision exists.Which statement is true?（）AYour speed must be reduced to bare steerage waysBA look-out is not required if the radar is onCThe radar should always be kept on a short-range scaleDFog signals are only required when a vessel is detected by radar
单选题In order to ensure that a RACON signal is displayed on the radar，you should（）.Aincrease the brilliance of the PPI scopeBturn off the interference controls on the radarCuse the maximum available range settingDincrease the radar signal output
单选题A vessel is “in sight” of another vessel when（）.Ashe can be observed by radarBshe can be observed visually from the other vesselCshe can be plotted on radar well enough to determine her headingDher fog signal can be heard
单选题When using the radar for navigating（）.Athe best fix is obtained by using a tangent bearing and a rangeBand using two radar ranges for a fix，the objects of the ranges should be close to reciprocal bearingsCand using ranges，the most rapidly changing range should be measured lastDand crossing a radar range of one object with the visual bearing of a second object，the two objects should be 80°to 110°apart