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 623003

Two legs from a 1215 fix: where is the 1300 DR?

At 1215 you fix your position 016°T, 1.7 nm from Heron Point Light. You steer 044°T at 7.0 kn until 1240, then 112°T at 9.1 kn until 1300.

Give the 1300 DR position as the true bearing FROM Tern Island tower 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
1215 fix	016°T, 1.7 nm from Heron Point Light
Leg 1	044°T, 7.0 kn, 1215 to 1240
Leg 2	112°T, 9.1 kn, 1240 to 1300

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