航海英语【二三副甲类】题库

单选题 1分

What is an advantage of the magnetic compass aboard vessels?

  • A.Compass error is negligible at or near the earth's magnetic poles.
  • B.It does not have to be checked as often.
  • C.It is reliable due to it's essential simplicity.
  • D.All points on the compass rose are readily visible.
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1 单选题 1分
The best method to stop a vessel from dragging anchor in a sand bottom is to ________.
  • A.reduce the length of the cable
  • B.pay out more anchor cable
  • C.back the engines
  • D.swing the rudder several times to work the anchor into the bottom
2 单选题 1分
The directive force of a gyrocompass ________.
  • A.increases with latitude，being maximum at the geographic poles
  • B.decreases with latitude，being maximum at the geographic equator
  • C.is greatest when a vessel is near the Earth's magnetic equator
  • D.remains the same at all latitudes
3 单选题 1分
What is the purpose of the freeing ports on a vessel with solid bulwarks?
  • A.Allow water which may be shipped on deck to flow off rapidly
  • B.Permit easy jettisoning of deck cargo in an emergency
  • C.Prevent the formation of any unusual stress concentration points
  • D.Lighten the above deck weight caused by a solid bulwark
4 单选题 1分
Two vessels are in an overtaking situation. Which of the lights on the overtaken vessel will the overtaking vessel see?
  • A.Two masthead lights
  • B.One masthead light and a sidelight
  • C.Both sidelights
  • D.Stern light only
5 单选题 1分
Which space cannot be deducted from gross tonnage when calculating net tonnage?
  • A.Crew messroom
  • B.Forepeak ballast tank
  • C.Master's cabin
  • D.Chain locker
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