Chart Navigation & Plotting · Chart Basics — Chart Scale
Which representative fraction denotes the SMALLEST-scale chart (least detail, largest area)?
- A1:20,000
- B1:1,000,000✓ Correct
- C1:80,000
- D1:5,000
Explanation
The larger the denominator, the smaller the scale and the larger the area covered with less detail. 1:1,000,000 is the smallest-scale (general/sailing) chart here; 1:5,000 would be a large-scale harbor chart.
Authority: Chart No. 1; Bowditch (Pub. No. 9)
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