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 698001

Two legs from a 1310 fix: where is the 1430 DR?

At 1310 you fix your position 022°T, 1.8 nm from Mill stack. You steer 068°T at 4.1 kn until 1355, then 297°T at 6.3 kn until 1430.

Give the 1430 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
1310 fix	022°T, 1.8 nm from Mill stack
Leg 1	068°T, 4.1 kn, 1310 to 1355
Leg 2	297°T, 6.3 kn, 1355 to 1430

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