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Labeling the DR Plot
Symbols
The symbol for a DR position is a small semicircle around a small dot
on a straight segment of a course line (fig. 8-5); it will be more or less
than a semicircle when plotted at a change in direction. The letters DR
are not used. Time, to the nearest minute, stated in the 24-hour system
as a 4-digit number is written nearby. All symbols for labeling positions
are also shown.
Figure 8-5. Symbols used for labeling positions along a course line.
Answers:
1. a. 10.4 hrs, b. 3 k, c. 1176 nmi, d. 11.5 k, e. 72 nmi, f. 99 hrs,
g. 51 hrs, h. 12 k.
2. 3/100/speed in knots
3. a. 7.5 k, b. 7.1 k, c. 7.7 k, d. 5.7 k, e. 4.1 k, f. 8.4 k
8-11
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