Dividers: drag from one point to another on the chart

Start a drag on a charted object or buoy and it snaps to it. The readout gives the true bearing (and magnetic, 7°W) from where you start to where you are, and the distance in nautical miles.

Skill 3 · Dead reckoningProblem 638008

Two legs from a 0710 fix: where is the 0730 DR?

At 0710 you fix your position 031°T, 1.8 nm from Mill stack. You steer 092°T at 7.2 kn until 0720, then 004°T at 6.5 kn until 0730.

Give the 0730 DR position as the true bearing FROM Gannet Rock daybeacon to the DR, and the distance. Courses are true and speeds are through the water; dead reckoning ignores current and leeway.

Tolerance: 2° and 0.15 nm (or 4 % of the distance).

Given
0710 fix	031°T, 1.8 nm from Mill stack
Leg 1	092°T, 7.2 kn, 0710 to 0720
Leg 2	004°T, 6.5 kn, 0720 to 0730

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