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 726003

Two legs from a 1120 fix: where is the 1215 DR?

At 1120 you fix your position 007°T, 1.5 nm from Mill stack. You steer 051°T at 7.3 kn until 1145, then 175°T at 4.0 kn until 1215.

Give the 1215 DR position as the true bearing FROM Kittle water tank 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
1120 fix	007°T, 1.5 nm from Mill stack
Leg 1	051°T, 7.3 kn, 1120 to 1145
Leg 2	175°T, 4.0 kn, 1145 to 1215

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