Which definition is equivalent to lining up objects to check position?

• A. Lining up objects to check position
• B. Line formed by two objects
• C. Navigation using visible landmarks
• D. Reference location for tide data

Answer: (A)

Lining up objects to check position is about using two visible landmarks and aligning them along a straight line to determine where you are. This exact action defines how you verify your location at sea, making the statement itself the best match for the concept being tested. The line formed by two objects describes the visual result, not the act of using it to pinpoint position. Navigation with visible landmarks refers to pilotage in general rather than the specific alignment technique. A reference location for tide data is unrelated to determining your position by sight. So the statement that directly captures the action is the best fit.