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 294004

Two legs from a 0750 fix: where is the 0855 DR?

At 0750 you fix your position 352°T, 1.9 nm from Mill stack. You steer 079°T at 5.3 kn until 0820, then 275°T at 6.7 kn until 0855.

Give the 0855 DR position as the true bearing FROM Heron Point Light 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
0750 fix	352°T, 1.9 nm from Mill stack
Leg 1	079°T, 5.3 kn, 0750 to 0820
Leg 2	275°T, 6.7 kn, 0820 to 0855

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