A.Running fix
B.Fix
C.Dead-reckoning position
D.Estimated position
您可能感興趣的試卷
你可能感興趣的試題
A.Current can be determined by measuring the direction and distance between simultaneous EP and DR positions
B.The drift of the current should be averaged out on a one hour basis
C.After the current is determined，it should not be used for further plotting because it is an unknown variable
D.The distance between a simultaneous DR position and fix is equal to the drift of the current
A.Dead reckoning position
B.Leeway position
C.Estimated position
D.Set position
A.ECDIS warnings and messages
B.Hydrographic Office data
C.Notice to Mariners information
D.All of the above
A.Safe water mark
B.Isolated danger mark
C.Preferred channel mark
D.Daymark of no lateral significance
A.The objects lie in a straight line
B.The vessel is inside of a triangle formed by the objects
C.The vessel is outside of a triangle formed by the objects
D.A circle will pass through your position and the three objects
最新試題
When navigating a vessel，you（）.
You should plot your dead reckoning position（）.
When using horizontal sextant angles of three objects to fix your position，an indeterminate position will result in which situation（）.
When using a buoy as an aid to navigation which of the following should be considered?（）
The recording fathometer produces a graphic record of the（）.
You have been informed that dredging operations may be underway in your vicinity.Which buoy indicates the dredging area（）.
Restricted areas at locks and dams are indicated by（）.
When entering a channel from seaward，the numbers on buoys（）.
Which position includes the effects of wind and current（）.
When navigating a vessel，you（）.