The amount and accuracy of the information provided on the different charts（）considerably.

A.UK Hydrographic Office
B.IMO
C.International Hydrographic Organization
D.International Association of Classification society

A.Being mroe than 25 miles from shore
B.Only at night when it‟s dark
C.Being more than 6 miles from shore
D.Never

A.Advection
B.Radiation fog
C.frontal fog
D.Steam fog