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 797007

Two legs from a 0810 fix: where is the 0845 DR?

At 0810 you fix your position 016°T, 1.8 nm from Mill stack. You steer 288°T at 9.3 kn until 0830, then 114°T at 7.9 kn until 0845.

Give the 0845 DR position as the true bearing FROM Mill stack 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
0810 fix	016°T, 1.8 nm from Mill stack
Leg 1	288°T, 9.3 kn, 0810 to 0830
Leg 2	114°T, 7.9 kn, 0830 to 0845

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