更多"In dense fog a vessel without opera"的相关试题:
[单项选择]When your vessel enters thick fog，she should sound（）every two minutes in accordance with these Rules.
A. one short blast
B. one prolonged blast
C. two short blasts
D. three short blasts
[单项选择]A vessel hearing a fog signal forward of her beam has not determined if risk of collision exists. She shall reduce speed to（）.
A. moderate speed
B. safe speed
C. half speed
D. bare steerageway
[单项选择]When vessel enters thick fog, she should sound（）every two minutes in accordance with the rules.
A. one short blast
B. one prolonged blast
C. two short blasts
[单项选择]A vessel sounding a fog signal of one short，one prolonged，and one short blast is indicating that the vessel is（）.
A. fishing
B. in distress
C. at anchor
D. not under command
[单项选择]Radar makes it possible for us（）in dense fog.
A. to be sailing
B. sailing
C. sail
D. to sail
[单项选择]Which condition indicates that your radar needs maintenance?（）
A. Serrated range rings
B. Indirect echoes
C. Multiple echoes
D. Blind sector
[单项选择]If your vessel is underway in fog and you hear one prolonged and three short blasts，this is a （）.
A. vessel not under command
B. sailing vessel
C. vessel being towed (manned)
D. vessel being towed (unmanned)
[单项选择]A 95-meter vessel aground sounds which fog signal? （）
A. A rapid ringing of a bell for 5 seconds every two minutes
B. A whistle signal of one short，one prolonged，and one short blast
C. A prolonged blast of the whistle at intervals not to exceed one minute
D. A rapid ringing of a bell for 5 seconds，preceded and followed by three separate and distinct strokes on the bell
[单项选择]A 200-meter vessel is aground in fog. Which signal is optional? （）
A. A bell signal
B. A gong signal
C. A whistle signal
D. All of the above
[单项选择]Vessel required to have an Automatic Radar Plotting Aid must have a device to indicate the（）.
A. speed of the vessel over the ground or through the water
B. distance to the next port
C. time of the next navigational satellite pass
D. None of the above
[单项选择]A vessel not under command sounds the same fog signal as a vessel（）.
A. towing
B. constrained by her draft
C. under sail
D. All of the above
[单项选择]Uncharted lights, fog signals and radar beacon transmissions may be（）near the station.
A. encountered
B. met
C. contacted
D. seen
[单项选择]Uncharted lights，fog signals and radar beacon transmissions may be（）near the station.
A. encountered
B. met
C. contacted
D. seen
[单项选择]A navigator fixing a vessel’s position by radar （）.
A. should never use radar bearings
B. should only use radar bearings when the range exceeds the distance to the horizon
C. can use radar information from one object to fix the position
D. must use information from targets forward of the beam
[单项选择]You hear the fog signal of another vessel forward of your beam.Risk of collision may exist.You MUST（）.
A. Reduce speed to bare steerageway
B. Stop your engines
C. Begin a radar plot
D. All of the above
[单项选择]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 engines
B. sound the danger signal at two-minute intervals
C. hold course and speed until the other vessel is sighted
D. take avoiding action as soon as possible
