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 566002

Two legs from a 1040 fix: where is the 1145 DR?

At 1040 you fix your position 003°T, 2.0 nm from Heron Point Light. You steer 049°T at 6.8 kn until 1110, then 013°T at 4.9 kn until 1145.

Give the 1145 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
1040 fix	003°T, 2.0 nm from Heron Point Light
Leg 1	049°T, 6.8 kn, 1040 to 1110
Leg 2	013°T, 4.9 kn, 1110 to 1145

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