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 367001

Two legs from a 0730 fix: where is the 0810 DR?

At 0730 you fix your position 047°T, 2.5 nm from Mill stack. You steer 332°T at 7.6 kn until 0750, then 123°T at 9.7 kn until 0810.

Give the 0810 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
0730 fix	047°T, 2.5 nm from Mill stack
Leg 1	332°T, 7.6 kn, 0730 to 0750
Leg 2	123°T, 9.7 kn, 0750 to 0810

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