Chart Navigation & Plotting · Chart Basics — Chart Scale
Of the following representative fractions, which chart has the LARGEST scale (most detail)?
- A1:10,000✓ Correct
- B1:80,000
- C1:250,000
- D1:1,200,000
Explanation
The larger the scale, the smaller the denominator of the representative fraction. 1:10,000 shows the smallest area in the greatest detail — a large-scale (harbor) chart. 1:1,200,000 is a small-scale chart covering a large area with little detail.
Authority: Chart No. 1; Bowditch (Pub. No. 9)
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