A.the letters ICW after the aid's number or letter
B.yellow stripes，squares，or triangles marked on them
C.white retroreflective material
D.the light characteristic and color for lighted aids
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A.Bayou Sara
B.Baton Rouge
C.Head of Passes
D.Red River Landing
A.Thimble Shoal Main Channel or the South Auxiliary Channel
B.Any of the channels but keep to the right hand side
C.The South Auxiliary Channel
D.Thimble Shoal Main Channel
A.Any span is navigable
B.Northbank or Southbank
C.Southbank span only
D.Northbank span only
A.Right Descending Bank span
B.Left Descending Bank span
C.Center span
D.Water is equal under all spans
A.does not change
B.improves rapidly
C.improves only slightly
D.becomes poor
最新試題
All of the following information concerning lighted aids to navigation may be read directly from the Light List EXCEPT the（）.
An indirect radar echo is caused by a reflection of the main lobe of the radar beam off the observer’s vessel. Which of the following is NOT a characteristic of indirect echoes? （）
An example of an anchor which has a stock is a（）.
Air circulation is caused or affected by（）.
An anchored vessel is servicing an aid to navigation and is restricted in her ability to maneuver. Which lights will she show? （）
An inflatable liferaft is floating in its container，attached to the ship by its painter，as the ship is sinking rapidly. Which action should be taken with respect to the liferaft container? （）
An icebreaker assisting a vessel through an ice field would display a visual signal consisting of the code letter “E” (Echo) to signify that “（）”.
All OSV personnel should be familiar with survival craft（）.
All Loran-C transmitting stations are equipped with cesium frequency standards which permit （）.
All of the following vessels are “restricted in their ability to maneuver” EXCEPT a vessel （）.