You determine your vessel’s position by taking a range and bearing to a buoy.Your position will be plotted as a（n）（）.

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