A FIX is represented on a chart by which symbol?

• A. Triangle
• B. Diamond
• C. Circle
• D. Square

Answer: (D)

A fix is a determined position, a precise point on the chart where you know you are. That point is shown with a square symbol. The square marks a specific location rather than an aiding device or feature, which is why it’s used for a fix. When you compute a fix from lines of position, you plot this symbol at the resulting location and often note the time and method used.

The other shapes—triangle, diamond, and circle—are used for other chart features or aids to navigation, not to indicate a calculated position. So the square is the best representation for a fix on the chart.