Chart Navigation & Plotting · Chart Scale
A chart with a representative fraction of 1:20,000 compared to one of 1:80,000 is a:
- ASmaller-scale chart showing less detail
- BLarger-scale chart showing more detail over a smaller area✓ Correct
- CChart of identical coverage
- DGnomonic chart
Explanation
The larger the representative fraction (1:20,000 > 1:80,000 numerically), the larger the scale, the more detail, and the smaller the geographic area covered. Use the largest-scale chart available for the area being navigated.
Authority: U.S. Chart No. 1; Bowditch (Pub. 9)
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