Question 113Navigation General

The correct answer is D) magnetic directions. On a nautical chart, the inner ring of the compass rose indicates magnetic directions, which are the directions based on the earth's magnetic field. This is because navigation on charts is primarily done using the magnetic compass, which provides readings relative to magnetic north rather than true north. The outer ring of the compass rose typically indicates true directions, which are based on true north. The other options are incorrect because: A) true directions are shown on the outer ring, not the inner ring; B) compass error is the difference between true and magnetic north, not what is shown on the inner ring; and C) deviation is the local magnetic disturbance caused by the vessel's iron components, which is not directly shown on the compass rose.