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 347005

Two legs from a 0945 fix: where is the 1020 DR?

At 0945 you fix your position 003°T, 2.4 nm from Mill stack. You steer 025°T at 9.6 kn until 0955, then 064°T at 5.3 kn until 1020.

Give the 1020 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
0945 fix	003°T, 2.4 nm from Mill stack
Leg 1	025°T, 9.6 kn, 0945 to 0955
Leg 2	064°T, 5.3 kn, 0955 to 1020

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