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 471008

Two legs from a 1115 fix: where is the 1215 DR?

At 1115 you fix your position 334°T, 1.8 nm from Mill stack. You steer 328°T at 9.0 kn until 1145, then 060°T at 5.9 kn until 1215.

Give the 1215 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
1115 fix	334°T, 1.8 nm from Mill stack
Leg 1	328°T, 9.0 kn, 1115 to 1145
Leg 2	060°T, 5.9 kn, 1145 to 1215

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